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Слова на букву extr-hemi (2629)

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folium
A broad, thin, leaflike structure. [L. a leaf] - folia cerebelli [TA] SYN: folia of cerebellum. - folia of cerebellum [TA] the narrow, leaf-like gyri of the cerebellar cortex. ...
Folli, Folius
Cecilio (Caesilius), Venetian anatomist, 1615–1660. See F. process, follian process.
follicle
1. A more or less spherical mass of cells usually containing a cavity. 2. A crypt or minute cul-de-sac or lacuna, such as the depression in the skin from which the hair ...
Follicle, hair
: A sac from which a hair grows and into which sebaceous (oil) glands open. The follicle is lined by cells derived from the epidermal (outside) layer of skin. "The human hair ...
follicular
Relating to a follicle or follicles.
Follicular cyst of the ovary
A fluid-filled sac in the ovary, the most common type of ovarian cyst. It results from the growth of a follicle. A follicle is the fluid-filled cyst that contains an egg. In some ...
folliculi
Plural of folliculus.
folliculin
SYN: estrone.
folliculin hydrate
SYN: estriol.
folliculitis
An inflammatory reaction in hair follicles; the lesions may be papules or pustules. - f. abscedens et suffodiens a chronic progressive pustular f. in the scalp. - f. barbae SYN: ...
folliculoma
1. SYN: granulosa cell tumor. 2. Cystic enlargement of a graafian follicle.
folliculosis
Presence of lymph follicles in abnormally great numbers.
folliculus
SYN: follicle. [L. a small sac, dim. of follis, bellows] - folliculi glandulae thyroideae the small spherical vesicular components of the thyroid gland lined with epithelium and ...
Folling
Ivar A., Norwegian physician, 1888–1973. See F. disease.
follistatin
A peptide synthesized by granulosa cells in response to FSH that suppresses FSH activity, probably by binding activins. [follicle + -stat + -in]
follitropin
An acidic glycoprotein hormone of the anterior pituitary that stimulates the graafian follicles of the ovary and assists subsequently in follicular maturation and the secretion ...
Foltz
Jean C.E., French anatomist and ophthalmologist, 1822–1876. See F. valvule.
Fomentation
A quaint old term for the application of hot packs or the substance so applied. From the Latin "fovimentum" which meant, no surprise, to "a warm application." To "foment" means, ...
fomes
Objects, such as clothing, towels, and utensils that possibly harbor a disease agent and are capable of transmitting it; usually used in the plural. SYN: fomite. [L. tinder, fr. ...
fomite
SYN: fomes. [L. fomitis, gen. of fomes. See fomes.]
fomites
Plural of fomes.
fonazine mesylate
A serotonin inhibitor with muscle relaxant properties. SYN: dimethothiazine mesylate.
Fondation Jean Dausset-CEPH
The Centre d’Etudes du Polymorphisme Humain (CEPH), an internationally renowned research laboratory created in Paris in 1984 by Professor Jean Dausset (Nobel Prize, Medicine ...
Fonio
Anton, Swiss physician, 1881–1968. See F. solution.
Fonsecaea
A genus of fungi of which at least two species, F. pedrosoi and F. compacta, cause chromoblastomycosis.
Fontan
Francois M., French thoracic surgeon, *1929. See F. procedure, F. operation.
Fontana
Felice, Italian physiologist, 1730–1805. See F. canal, F. spaces, under space. Arturo, Italian dermatologist, 1873–1950. See F. stain, F.- Masson silver stain, Masson-F. ...
Fontanel (fontanelle)
The word fontanel comes from the French fontaine for fountain. The medical term fontanel is a "soft spot" of the skull. The "soft spot" is soft precisely ...
fontanelle
One of several membranous intervals at the margins of the cranial bones in the infant. See cranial fontanelles. SYN: fonticulus. [Fr. dim. of fontaine, fountain, spring] - ...
fonticulus
SYN: fontanelle. See cranial fontanelles, under fontanelle. [L. dim. of fons (font-), fountain, spring] - f. anterior SYN: anterior fontanelle. - f. anterolateralis ...
Food
Any substance eaten to provide nutritional support for the body. * * * That which is eaten to supply necessary nutritive elements. [A.S. foda]
Food and Drug Administration
The Food and Drug Administration (FDA) is an agency within the U.S. Public Health Service, which is a part of the Department of Health and Human Services. Background: The FDA ...
Food poisoning
A common flu-like illness typically characterized by nausea, vomiting and diarrhea, due to something the victim ate or drank that contained noxious bacteria, viruses, parasites, ...
Food poisoning, Campylobacter
Now the leading cause of bacterial food poisoning, caused by an Campylobacter jejuni, most often spread by contact with raw or undercooked poultry. A single drop of juice from a ...
Food, functional
Functional foods are "those foods that encompass potentially healthful products including any modified food or ingredient that may provide a health benefit beyond the traditional ...
Food, “super”
Foods with alleged healing or health-promoting capabilities. The healing power of foods is a popular concept. Medicinal or nutritionally high- powered foods have been part and ...
Foot
The end of the leg on which a person normally stands and walks. The foot is a particularly complex structure made up of dozens of bones that work together with muscles and tendons ...
Foot drop brace
A brace usually made of plastic that is worn on the lower leg and foot to support the ankle, hold the foot and ankle in the correct position, and correct foot drop. This type of ...
Foot fungus
Athlete’s foot causes foot itching, burning, pain, and scaling. It is caused by a fungus and is treated with antifungal medications, many of which are available ...
Foot, athlete
A skin infection caused by a fungus called Trichophyton which can thrive and infect the upper layer of the skin when the feet (or other areas of the body) remain moist, warm, and ...
Foot-and-mouth disease
A highly infectious virus that can infect people but affects them most by infecting livestock — cattle, pigs, sheep and goats. The virus is in the same family of viruses as ...
foot-pound
Energy expended, or work done, in raising a mass of 1 pound a height of 1 foot vertically against gravitational force.
foot-poundal
Energy exerted, or work done, when a force of 1 poundal displaces a body 1 foot in the direction of the force; equal to about 0.01 calorie.
footcandle
Illumination or brightness equivalent to 1 lumen per square foot; replaced in the SI system by the candela.
footdrop
Partial or total inability to dorsiflex the foot, as a consequence of which the toes drag on the ground during walking unless a steppage gait is used; most often ultimately due ...
footling
A fetal foot, particularly one that descends into the birth canal in an incomplete breech presentation. [foot, fr. A. S. fot, + -ling, dim. suffix]
Footling presentation
There are single-footling or double-footling presentations depending upon whether the presenting part of the baby at delivery is just one foot or both feet.
footplate, foot-plate
1. base of stapes. 2. pedicel.
footprinting
A method for determining the area of DNA covered by protein binding; accomplished by nuclease digestion of the protein-DNA complex followed by analysis of the region of DNA ...
forage
The operation of cutting a channel by surgical diathermy through an enlarged prostate. [Fr. boring]
Foramen
A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation ...
Foramen magnum
The large hole at the base of the skull which allows passage of the spinal cord.
Foramen of Magendie
An opening from the fourth ventricle, which is one in a system of four communicating cavities called ventricles within the brain that are continuous with the central canal of the ...
Foramen ovale
An oval opening between the two upper chambers of the heart (the atria) that is a normal feature of the fetal and neonatal (newborn) circulation. The foramen ovale normally closes ...
Foramen, interventricular
An opening between the lateral and third ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The ...
foramina
Plural of foramen.
Foramina of Luschka
Opening from the fourth ventricle, one in a system of four communicating cavities called ventricles within the brain that are continuous with the central canal of the spinal ...
Foraminifera
A subclass of Rhizopoda possessing anastomosing pseudopodia; these form a network around the cell which usually develops into a complex calcareous shell; an important component ...
foraminiferous
1. Possessing openings or foramina. 2. Relating to the Foraminifera.
foraminotomy
An operation upon an aperture, usually to open it, e.g., surgical enlargement of the intervertebral foramen. [L. foramen, aperture, + G. tome, a cutting]
foraminulum
A very minute foramen. [Mod. L. dim. of foramen]
Forbes
Gilbert B., U.S. pediatrician, *1915. See F. disease. A.P., 20th century U.S. physician. See F.- Albright syndrome.
force
That which tends to produce motion in a body. [L. fortis, strong] - animal f. muscular power. - chewing f. SYN: f. of mastication. - dynamic f. SYN: energy. - electromotive f. ...
force platform
A device used to measure the strength, symmetry, and latency of compensatory postural movements when visual, vestibular, and somatosensory stimuli are varied.
Forceps
An instrument with two blades and a handle used for handling, grasping, or compressing. Many types of forceps are employed in medicine, including the alligator forceps (an angled ...
Forchheimer
Frederick, U.S. physician, 1853–1913. See F. sign.
forcipate
Shaped like a forceps.
forcipressure
A method of arresting hemorrhage by compressing a blood vessel with forceps.
Fordyce
John A., U.S. dermatologist, 1858–1925. See F. angiokeratoma, F. disease, F. granules, under granule, F. spots, under spot, Fox-F. disease.
Forearm
The portion of the upper limb from the elbow to the wrist. In popular usage, the arm extends from the shoulder to the hand. However, in medical terminology, the arm refers to the ...
forebrain
prosencephalon.
foreconscious
Denoting memories, not at present in the consciousness, which can be evoked from time to time, or an unconscious mental process which becomes conscious only on the fulfillment of ...
forefinger
SYN: index finger.
foregut
The cephalic portion of the primitive digestive tube in the embryo. From its endoderm arises the epithelial lining of the pharynx, trachea, lungs, esophagus, and stomach, the ...
forehead
The part of the face between the eyebrows and the hairy scalp. SYN: frons [TA], sinciput, brow (2). - olympian f. the abnormally prominent, high, and broad f. in hereditary ...
Foreign body airway obstruction
Partial or complete blockage of the breathing tubes to the lungs due to a foreign body (e.g., food, a bead, toy, etc.) The onset of respiratory distress may be sudden with cough. ...
forekidney
SYN: pronephros.
Forel
Auguste H., Swiss neurologist, 1848–1931. See F. decussation, fields of F., under field, tegmental fields of F., under field.
forelock
The lock of hair that grows just above the forehead. - white f. a triangular or diamond-shaped depigmented macule with white hairs, usually located in the anterior midline of the ...
foremilk
SYN: colostrum.
Forensic
Dealing with the application of scientific knowledge to legal problems. Pertaining to legal proceedings. For examples, forensic anthropology, forensic dentistry, forensic ...
Forensic genetics
The branch of genetics that deals with the application of genetic knowledge to legal problems and legal proceedings. Forensic genetics is also a branch of forensic medicine ...
Forensic medicine
The branch of medicine that deals with the application of medical knowledge to legal problems and legal proceedings. Forensic medicine is also called legal medicine. A physician ...
foreplay
Stimulative sexual activity preceding sexual intercourse.
forepleasure
Sexual pleasure resulting from the foreplay that precedes the genital-orgastic pleasure in sexual intercourse.
Foreskin
The fold of skin which covers the head (the glans) of the penis. Also called the prepuce. Only about 1 in every 20 boys is born with a retractable foreskin. This reflects the ...
Foreskin and glans, inflammation of the
In the uncircumcised male, balanitis (inflammation of the glans, the rounded head of the penis) and posthitis (inflammation of the foreskin) usually occur together as ...
Foreskin, inflammation of the
Inflammation of the foreskin of the penis (the prepuce) is called posthitis. In the uncircumcised male, posthitis and balanitis (inflammation of the glans, the rounded head ...
Foreskin, tight
The foreskin of the penis is too tight, a condition called phimosis. The penis itself consists of a cylindrical shaft with a rounded tip which is called the glans. The ...
Forestier
Jacques, French rheumatologist, 1890–1978. See F. disease.
Forestier disease
A form of degenerative arthritis characteristically associated with flowing calcification along the sides of the vertebrae of the spine and commonly with inflammation (tendinitis) ...
form
Shape; mold. [L. forma] - accolé forms (ak-ola′) SYN: appliqué forms. - appliqué forms (ap-li-ka′) a term applied to the manner in which the ring stage of Plasmodium ...
Formad
Henry, U.S. physician, 1847–1892. See F. kidney.
Formaldehyde
: A pungent gas, with the chemical formula HCHO, used as an antiseptic, disinfectant, and especially today as a fixative for histology (the study of tissues under the ...
Formalin
: A 37% aqueous (water) solution of formaldehyde, a pungent gas, with the chemical formula HCHO, used as an antiseptic, disinfectant, and especially today as a fixative for ...
formalinize
To add formalin solution to inactivate vaccines without destroying their immunizing power.
formamidase
An enzyme catalyzing the hydrolysis of n-formyl-l-kynurenine to l-kynurenine and formate, a reaction of significance in l-tryptophan catabolism. SYN: formylase, kynurenine f.. ...
formant
Tones and their overtones resulting from the production of vowel phonemes.
formate
A salt or ester of formic acid; i.e., the monovalent radical HCOO– or the anion HCOO−. - active f. N10-formyltetrahydrofolate or an equivalent oxidation product of ...
formatio
1. SYN: formation. 2. A structure of definite shape or cellular arrangement. [L. fr. formo, pp. -atus, to form] - f. hippocampalis hippocampal formation. See hippocampus. - f. ...
formation
1. A f.; a structure of definite shape or cellular arrangement. 2. That which is formed. 3. The act of giving form and shape. SYN: formatio (1) [TA]. - concept f. in psychology, ...
formationes
Plural of formatio.
formazan
A water-insoluble colored compound of the general structure, RNH—N=CR′—N=NR″, formed by reduction of a tetrazolium salt in the histochemical demonstration of oxidative ...
formboard
A board containing cut-outs in various shapes, into which blocks of corresponding shape are to be fitted; a neuropsychological test of which the Tactual Performance Test of the ...
forme fruste
A partial, arrested, or inapparent form of disease. [Fr. unfinished form]
formic
1. Pertaining to f. acid. 2. Relating to ants. [L. formica, ant]
formic acid
HCOOH; the smallest carboxylic acid; a strong caustic, used as an astringent and counterirritant.
formic aldehyde
SYN: formaldehyde.
formication
A form of paresthesia or tactile hallucination; a sensation as if small insects are creeping under the skin. [L. formica, ant]
formiminoglutamic acid
An intermediate metabolite in l-histidine catabolism in the conversion of l-histidine to l-glutamic acid, with the formimino group being transferred to tetrahydrofolate; it may ...
formin
A family of proteins that participates in cell polarization, cytokinesis, and vertebrate limb formation. [L. forma, form, + -in]
formocresol
An aqueous solution containing cresol, formaldehyde, and glycerine, used in vital primary teeth needing coronal pulpotomy.
formol
SYN: formalin.
formosulfathiazole
An antimicrobial agent for treatment of intestinal infections.
formula
1. A recipe or prescription containing directions for the compounding of a medicinal preparation. 2. In chemistry, a symbol or collection of symbols expressing the number of ...
Formula, infant
A substitute for breast milk for feeding infants. Pediatricians generally advise exclusively breastfeeding (that is, breastfeeding with no formula) for all full term, healthy ...
Formulary
A collection of formulas, recipes, and prescriptions. The National Formulary is published by the American Pharmaceutical Association every 5 years and gives the composition, ...
formyl
The radical, HCO–. - active f. the f. group taking part in transformylation reactions with a folic acid derivative in the role of carrier. - f.-methionyl-tRNA SYN: initiation ...
formylase
SYN: formamidase.
formylmethionyl-tRNA
Initiation tRNA in certain organisms.
Forney
William R., U.S. pediatrician, *1931.
fornicate
1. Vaulted or arched; resembling a fornix. [L. fornicatus, arched, fr. fornix, vault, arch] 2. To have sexual intercourse. [see fornication]
Fornication
Sexual intercourse that is "illicit", outside of marriage. The term "fornication" has close medical relatives by the name of " fornix", the word for "arch" in Latin. In anatomy ...
fornices
Plural of fornix.
Fornix
In anatomy, a vaultlike or arched structure. "Fornix" is the Latin word for " vault or arch." The fornix in the brain is a fibrous arching band connecting the two lobes of the ...
Fornix cerebri
An arching fibrous band in the brain connecting the two lobes of the cerebrum. (The cerebrum is the largest part of the brain and consists of two hemispheres separated by a deep ...
Fornix conjunctivae
The fornix of the conjunctivae refers to loose arching folds connecting the conjunctival membrane lining the inside of the eyelid with the conjunctival membrane covering the ...
Fornix uteri
The fornix of the uterus refers to the anterior (front) and posterior (back) recesses into which the upper vagina is divided. These vaultlike recesses are formed by protrusion of ...
Fornix vaginae
The fornix of the vagina refers to the anterior (front) and posterior (back) recesses into which the upper vagina is divided. These vaultlike recesses are formed by protrusion of ...
forskolin
A phorbol ester that binds to and activates protein kinase C, thus mimicking the actions of diacylglycerol. [fr. Coleus forskohlii, taxonomic name of botanical source]
Forssman
John, Swedish bacteriologist and pathologist, 1868–1947. See F. antibody, F. antigen, F. reaction, F. antigen-antibody reaction. Hans, Swedish physician, *1912. See ...
Förster
Richard, German ophthalmologist, 1825–1902. See F. uveitis.
foscarnet
A pyrophosphate analog antiviral drug.
Fosdick
Leonard S., U.S. chemist, 1903–1969. See F.-Hansen- Epple test.
Foshay
Lee, U.S. bacteriologist, 1896–1961. See F. test.
fossa
A depression usually more or less longitudinal in shape below the level of the surface of a part. [L. a trench or ditch] - acetabular f. [TA] a depressed area in the floor of the ...
fossette
1. SYN: fossula. 2. A seldom-used term for corneal ulcer of small diameter. [Fr. dim. of fosse, a ditch]
fossula
1. [NA] A small fossa. 2. A minor fissure or slight depression on the surface of the cerebrum. SYN: fossette (1). [L. dim. of fossa, ditch] - f. fenestrae cochleae [TA] SYN: ...
fossulate
Grooved; containing a fossula or small fossa; hollowed out.
Foster frame
See under frame.
Foster Kennedy
See Kennedy.
Fothergill
John, English physician, 1712–1780. See F. disease, F. neuralgia, F. sign. William E., English gynecologist, 1865–1926. See F. operation.
Fouchet
A., French physician, *1894. See F. reagent, F. stain.
foulage
Kneading and pressure of the muscles, constituting a form of massage. [Fr. impression]
foundation
A base; a supporting structure. - denture f. that portion of the oral structures which is available to support a denture. SEE ALSO: denture f. area, denture f. surface, mean f. ...
founder
A person who contributes to the initial genetic structure of a population and is liable to contribute to a large proportion of the genes in the descendants from it.
Founder effect
The positive effect on gene frequency when a population (a colony) has only a small number of original settlers (founders) one or more of whom had that gene. For example, the ...
fourchette
frenulum of labia minora. [Fr. dim. of fourché, fr. L. furca, fork]
Fourier
J.B.J., French mathematician and administrator, 1768–1830. See F. analysis, F. transform, F. transfer.
Fourneau
Ernest F.A., French chemist and pharmacologist, 1872–1949. See F. 710, F. 933.
Fourneau 710
A synthetic quinoline; an antimalarial agent. [Ernest F.A. Fourneau]
Fourneau 933
SYN: piperoxan hydrochloride. [Ernest F.A. Fourneau]
Fournier
Jean A., French syphilographer, 1832–1914. See F. disease, F. gangrene, syphiloma of F..
Fourth cranial nerve
The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear ...
Fourth disease
A disorder characterized by a rash due to a toxin produced by Staphylococcus aureus (Staph aureus bacteria). Measles and scarlet fever were differentiated from one another in ...
Fourth stage of labor
The hour or two after delivery when the tone of the uterus is established and the uterus contracts down again expelling any remaining contents. These contractions are hastened by ...
Fourth ventricle
One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ...
fovea
Any natural depression on the surface of the body, such as the axilla, or on the surface of a bone. Cf.:dimple. SYN: pit (1). [L. a pit] - f. anterior SYN: superior f.. - ...
Fovea centralis
The central fovea, a tiny pit located in the macula (an area in the retina where vision is keen) that provides the clearest vision of all. Why? Because here and only here are ...
foveate, foveated
Pitted; having foveas or depressions on the surface.
foveation
Pitted scar formation, as in smallpox, chickenpox, or vaccinia. [L. fovea, a pit]
foveola
A minute fovea or pit. [Mod. L. dim. of L. fovea, pit] - f. coccygea [TA] SYN: coccygeal f.. - coccygeal f. [TA] a depression in the skin over the coccyx caused by the caudal ...
foveolar
Pertaining to a foveola.
foveolate
Having minute pits (foveolae) or small depressions on the surface.
Foville
Achille L., French neurologist, 1799–1878. See F. fasciculus, F. syndrome.
Fowler
George R., U.S. surgeon, 1848–1906. See F. position.
Fox
George H., U.S. dermatologist, 1846–1937. See F.- Fordyce disease. Lewis, U.S. periodontist, *1903. See Goldman-F. knives, under knife.
foxglove
SYN: Digitalis.
FPLC
Abbreviation for fast protein liquid chromatography.
FPS, fps
Abbreviation for foot-pound-second. See foot-pound-second system, foot-pound-second unit.
Fr
1. Symbol for francium.
Fraccaro
Marco, Italian ophthalmologist, *1926. See Schmid-F. syndrome. M., Italian physician. See Parenti-F. syndrome.
fractals
Mathematical patterns developed by Benoit Mandelbrot in 1977, in which small parts have the same shape as the whole. Blood vessels and the bronchial tree behave as f.; some ...
fraction
1. The quotient of two quantities. 2. An aliquot portion or any portion. 3. As a verb, to separate into portions. - amorphous f. of adrenal cortex noncrystalline residue of ...
Fraction, ejection
The portion of blood that is pumped out of a filled ventricle as a result of a heartbeat. The heart does not eject all of the blood that is in the ventricle. Normally, about ...
fractionation
1. To separate components of a mixture. 2. The administration of a course of therapeutic radiation of a neoplasm in a planned series of fractions of the total dose, most often ...
fracture
1. To break. 2. A break, especially the breaking of a bone or cartilage. [L. fractura, a break] - apophysial f. separation of apophysis from bone. - articular f. a f. involving ...
Fracture, basilar
A break in bone at the base of the skull. About a half of basilar fractures are caused by bicycle or motor vehicle accidents, about a quarter by falls, and a tenth by ...
Fracture, clay-shoveler’s
An uncommon breakage of the spine of the vertebrae from the lower neck or upper back as a result of stress. Clay-shoveler’s fracture usually occurs in laborers who perform ...
Fracture, comminuted
A fracture in which bone is broken, splintered or crushed into a number of pieces. A fracture is a break in the bone or cartilage. It usually is a result of trauma but can be ...
Fracture, compound
A fracture in which the bone is sticking through the skin. Also called an open fracture. A fracture is a break in the bone or cartilage. It usually is a result of trauma but ...
Fracture, compression
A fracture caused by compression, the act of pressing together. Compression fractures of the vertebrae are especially common in the elderly. A fracture is a break in the bone or ...
Fracture, greenstick
A fracture in which one side of a bone is broken while the other is bent (like a green stick). A fracture is a break in the bone or cartilage. It usually is a result of trauma ...
Fracture, open
A fracture in which the bone is sticking through the skin. Also called a compound fracture. A fracture is a break in the bone or cartilage. It usually is a result of trauma but ...
Fracture, spiral
A fracture, sometimes called a torsion fracture, in which a bone has been twisted apart. A fracture is any break in the bone or cartilage. It usually is a result of trauma but ...
Fracture, stress
A fracture caused by repetitive stress, as may occur in sports, strenuous exercise, or heavy physical labor. It is especially common in the metatarsal bones of foot, particularly ...
Fracture, torsion
A fracture, also called a spiral fracture, in which a bone has been twisted apart. A fracture is any break in the bone or cartilage. It usually is a result of trauma but can be ...
Fracture, torus
A fracture in which one side of the bone bends, but does not actually break. Torus fractures normally heal on their own within a month with rest and disuse, although they can ...
Fracture, transverse
A fracture in which the break is across the bone, at a right angle to the long axis of the bone. A fracture is a break in the bone or cartilage. It usually is a result of trauma ...
Fractured hip
Broken bone in the hip, a key health problem among the elderly, usually due to a fall or other kind of trauma involving direct impact to the hip bone which has been weakened by ...
Fraenkel
Albert, German physician, 1848–1916. See F. pneumococcus.
Fragile site
A term devised in 1969 by Frederick Hecht to denote a heritable point on a chromosome where gaps and breaks tend to occur.
Fragile X chromosome
An X chromosome with a heritable fragile site associated with a frequent form of mental retardation — the fragile X syndrome. The fragile X chromosome was first sighted by Dr. ...
Fragile X syndrome
One of the most common causes of inherited mental retardation and neuropsychiatric disease in human beings, affects as many as one in 2000 males and one in 4000 females. The ...
fragilitas
SYN: fragility. [L.] - f. crinium brittleness of the hair; a condition in which the hair of the head or face tends to split or break off. - f. sanguinis SYN: osmotic fragility. ...
fragility
Brittleness; liability to break, burst, or disintegrate. SYN: fragilitas. [L. fragilitas] - f. of the blood SYN: osmotic f.. - capillary f. the susceptibility of capillaries ...
fragilocyte
A red blood cell that is unusually fragile when subjected to a hypotonic salt solution. [L. fragilis, brittle, + G. kytos, hollow (cell)]
fragilocytosis
A condition of the blood in which the red blood cells are abnormally fragile.
fragment
A small part broken from a larger entity. - acentric f. SYN: acentric chromosome. - Brimacombe f. a ribonucleoprotein f. obtained by mild ribonuclease treatment of ...
fragmentation
The breaking of an entity into smaller parts. SYN: spallation (1). - f. of the myocardium a transverse rupture of the muscular fibers of the heart, especially those of the ...
fraise
A burr in the shape of a hemispherical button with cutting edges, used to enlarge a trephine opening in the skull or to cut osteoplastic flaps; the smooth convexity of the ...
Fraley
Elwin E., U.S. urologist, *1934. See F. syndrome.
Frambesia
Also known as yaws, frambesia is a common chronic infectious disease that occurs mainly in the warm humid regions of the tropics with characteristic bumps on the skin of the ...
frambesia tropica
SYN: yaws. [Fr. framboise, raspberry]
frambesiform
Resembling the lesion of yaws.
frambesioma
SYN: mother yaw. [frambesia + -oma, tumor]
frame
A structure made of parts fitted together. - Balkan f. an overhead f., supported on uprights attached to the bedposts or to a separate stand, from which a splinted limb is slung ...
frameshift
As used in genetics : a mutation that causes a sequence such that the reading frame groups of three bases in mRNA become out of register; the insertion or deletion of one or ...
framework
1. See stroma. 2. In dentistry, the skeletal prosthesis (usually metal) around which and to which are attached the remaining portions of the prosthesis to produce the finished ...
Framingham Study
A landmark study begun in 1948 in which some 12,000 residents of the town of Framingham, Massachusetts were enrolled in a study designed to gather medical data and, more recently, ...
Franceschetti
Adolphe, Swiss ophthalmologist, 1896–1968. See F. syndrome, F.- Jadassohn syndrome.
Francisella
A genus of nonmotile, nonsporeforming, aerobic bacteria that contain small, Gram-negative cocci and rods. Capsules are rarely produced and the cells may show bipolar staining. ...
francium
Radioactive element of the alkali metal series; atomic no. 87; half-life of most stable known isotope, 223Fr, is 21.8 min. [France, native country of Mlle. M. Perey (1909–1975), ...
Francke
Karl E., German physician, 1859–1920. See F. needle.
François
Jules, contemporary Belgian ophthalmologist. See central cloudy corneal dystrophy of F.. SEE ALSO: central cloudy corneal dystrophy of F..
frangula
The bark of Rhamnus f. (family Rhamnaceae); a laxative or cathartic.
frangulic acid
SYN: emodin. [see frangula]
frangulin
A glycoside from frangula; has been used as a purgative. SYN: rhamnoxanthin.
Frank
Otto, German physiologist, 1865–1944. See F.- Starling curve.
frank
Unmistakable; manifest; clinically evident.
Frankenhäuser
Ferdinand, German gynecologist, 1832–1894. See F. ganglion.
Frankfort
See F. horizontal plane, F.-mandibular incisor angle. [Frankfurt-am-Main, Germany]
frankincense
SYN: olibanum. [Mediev. L. francum incensum, pure incense]
Franklin
Benjamin, U.S. physicist and statesman, 1706–1790. See franklinic, F. spectacles. Edward C., U.S. physician and immunologist, *1928. See F. disease.
franklinic
Denoting static or frictional electricity. [B. Franklin]
Fräntzel
Oscar Maximilian Victor, German physician, 1838–1894. See F. murmur.
Fraser
Alexander, Canadian pathologist, 1869–1939. See F.- Lendrum stain for fibrin. George R., 20th century British geneticist. See F. syndrome.
Fraternal twin
A twin who have shared a common uterine environment with its sibling. Fraternal twins are due to the fertilization of two different ova by different sperm. Fraternal twins are ...
Fraumeni
Joseph F., Jr., epidemiologist, *1933. See Li-F. cancer syndrome.
Fraunhofer
Joseph von, German optician, 1787–1826. See F. lines, under line.
Frazier
Charles H., U.S. surgeon, 1870–1936. See F. needle, F.- Spiller operation.
FRC
Abbreviation for functional residual capacity.
Freckle
A tan or brown spot that develops on the skin after repeated exposure to sunlight. Freckles are most likely to develop in persons with fair complexions and red hair, occurring ...
Fredet
Pierre, French surgeon, 1870–1946. See F.- Ramstedt operation.
Freeman
Ernest A., †1975. See F.- Sheldon syndrome.
freeze-drying
SYN: lyophilization.
freezing
Congealing, stiffening, or hardening by exposure to cold. - gastric f. formerly used treatment for peptic ulcer designed to reduce or eliminate the production of acid gastric ...
Frei
Wilhelm S., German dermatologist, 1885–1943. See F. test, F.-Hoffmann reaction.
Freiberg
Albert Henry, U.S. surgeon, 1869–1940. See F. disease.
Frejka
Bedrich, Czech orthopedist, 1890–1972. See F. pillow splint.
fremitus
A vibration imparted to the hand resting on the chest or other part of the body. SEE ALSO: thrill. [L. a dull roaring sound, fr. fremo, pp. -itus, to roar, resound] - bronchial ...
frena
Plural of frenum.
frenal
Relating to any frenum.
French
See F. scale.
frenectomy
Removal of any frenum. [ frenum + G. ektome, excision]
frenoplasty
Correction of an abnormally attached frenum by surgically repositioning it. [ frenum + G. plastos, formed]
frenotomy
Division of any frenum or frenulum, especially that of the tongue. [ frenum + G. tome, a cutting]
Frenulum
From the diminutive of the Latin for a bridle, that is something that has a restraining function. For example, the frenulum of the tongue attaches it to the floor of the mouth ...
frenum
1. A narrow reflection or fold of mucous membrane passing from a more fixed to a movable part, serving to check undue movement of the part. 2. An anatomical structure resembling ...
frenzy
Extreme mental or emotional excitement. [thr. Old Fr. and L. fr. G. phrenesis, inflammation of the brain, fr. phren, mind]
frequency
The number of regular recurrences in a given time, e.g., heartbeats, sound vibrations. [L. frequens, repeated, often, constant] - best f. SYN: characteristic f.. - characteristic ...
Frequency, urinary
Urinating too often, at too frequent intervals, not due to an unusually large volume of urine, but rather to a decrease in the capacity of the bladder to hold urine.
Frerichs
Friedrich T. von, German pathologist and clinician, 1819–1885. See F. theory.
freshening
Preparation of an open, partially healed wound for secondary closure by removal of fibrin, granulations, and early scar tissue.
Fresnel
Augustin Jean, French physicist, 1788–1827. See F. lens, F. prism.
fressreflex
Sucking and chewing movements elicited by stimulation of the face and lips. [Ger fr. fressen, to feed, said of animals]
fretting
Abrasive polishing and wear of two metallic surfaces at their interface due to repetitive motion. [M.E., fr. O.E. fretan, to devour]
fretum
A strait; a constriction. [L.]
Freud
Sigmund, Austrian neurologist and psychiatrist, 1856–1939, founder of psychoanalysis. See freudian, freudian fixation, freudian psychoanalysis, freudian slip, F. theory. ...
freudian
Relating to or described by Sigmund Freud (1856–1939). - f. slip a mistake in speech or deed that presumably suggests some underlying motive, often sexual or aggressive in ...
Freund
Jules, U.S. bacteriologist, 1891–1960. See F. complete adjuvant, F. incomplete adjuvant. Wilhelm A., German gynecologist, 1833–1918. See F. anomaly, F. operation.
Frey
Max von, German physician, 1852–1932. See F. hairs, under hair. Lucie, Polish physician, 1852–1932. See F. syndrome.
Frey syndrome
Sweating on one side of the forehead, face, scalp, and neck occurring soon after ingesting food as a result of damage to a nerve that goes to the large saliva gland in the cheek ...
FRH
Abbreviation for follitropin-releasing hormone.

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