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SYN: adrenalopathy.
Decrease in function of adrenal glands with increasing age, analogous to menopause.
Rarely used term indicating a loss of adrenal function, as a result of either disease or surgical excision. [adreno- + L. privo, to deprive]
Responding to the catecholamines.
SYN: adrenergic receptors, under receptor.
An androgen isolated from the adrenal cortex. SYN: andrenosterone.
A substance toxic for the adrenal glands. [adreno- + toxin]
adrenotropic, adrenotrophic
SYN: adrenocorticotropic.
SYN: adrenocorticotropic hormone.
SYN: doxorubicin.
Alfred W., U.S. neurosurgeon, 1887–1951. See A. test, A. forceps, A. maneuver, Brown-A. forceps.
To take up by adsorption. [L. ad, to, + sorbeo, to suck in]
Any substance adsorbed.
1. A substance that adsorbs, i.e., a solid substance endowed with the property of attaching other substances to its surface without any covalent bonding, e.g., activated ...
The property of a solid substance to attract and hold to its surface a gas, liquid, or a substance in solution or in suspension. For example, condensation of a gas onto a ...
Near or upon the sternum.
In a direction toward the nerve endings, muscular insertions, or the extremity of any structure.
1. Fully grown and physically mature. 2. A fully grown and mature individual. [L. adultus, grown up fr. adolesco, to grow up]
Adult primary liver cancer
1. A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular carcinoma. Primary liver cancer is different from cancer that has ...
An impurity; an additive that is considered to have an undesirable effect or to dilute the active material so as to reduce its therapeutic or monetary value.
The alteration of any substance by the deliberate addition of a component not ordinarily part of that substance; usually used to imply that the substance is debased as a result.
Interpretation of children's behavior in adult terms.
Abbreviation for L. adversum, against.
To move forward. [Fr. avancer, to set forward]
Advance directives
These directives pertain to treatment preferences and the designation of a surrogate decision-maker in the event that a person should become unable to make medical decisions on ...
Advance medical directives
These directives pertain to treatment preferences and the designation of a surrogate decision-maker in the event that a person should become unable to make medical decisions on ...
advanced life support
Definitive emergency medical care that may include defibrillation, airway management, and use of drugs and medications. Cf.:basic life support.
Surgical procedure in which an attachment is partially severed or released so that tissue may be moved to a more distal point. - capsular a. surgical reattachment of the anterior ...
The outermost connective tissue covering of any organ, vessel, or other structure. For example, the connective tissue that surrounds an artery is called the adventitia because ...
Relating to the outer coat or adventitia of a blood vessel or other structure. SYN: adventitious (3).
Coming from an external source or occurring in an unusual place or manner. Not inherent, inherited or innate but rather occurring accidentally or spontaneously. When a doctor or ...
Adverse effect
A harmful or abnormal result. An adverse effect may be caused by exposure to a chemical and be indicated by an untoward result such as by illness or death.
Adverse event
In pharmacology, an adverse event is any unexpected or dangerous reaction to a drug.
1. SYN: asthenia. 2. Lack of motor activity or strength. 3. Obsolete term for paralytic ileus of the intestine. [G. a- priv. + dynamis, power] - a. episodica hereditaria ...
Relating to adynamia.
For words so beginning and not found here, see under e-.
Christopher T., Swiss anatomist, 1835–1885. See A. plane.
A widespread genus of small mosquitoes frequently found in tropical and subtropical regions. [G. a., unpleasant, unfriendly] - A. aegypti the yellow fever mosquito, a species ...
A common genus of lungworm in cats; land snails and slugs serve as intermediate hosts and snail-eating animals can serve as transport hosts. [G. ailuros, cat, + Mod. L., fr. G. ...
A luminescent protein isolated from the jellyfish Aequorea which emits blue light in the presence of even minute amounts of calcium ion; injected intracellularly, it is used to ...
Aer-, aero-
Prefix indicating a problem due to air or gas, such as aerogastria (excess stomach gas.) * * * The air, a gas; aerial, gassy. [G. aer (L. aer), air]
1. To supply (blood) with oxygen. 2. To expose to the circulation of air for purification. 3. To supply or charge (liquid) with a gas, especially carbon dioxide.
Presence of undissolved air in the blood within the heart. [aer- + G. endon, within, + kardia, heart]
See aer-.
SYN: aerodontalgia.
SYN: aerodontalgia.
See Enterobacter. [ aero- + G. bakterion, a small staff]
1. An organism that can live and grow in the presence of oxygen. 2. An organism that can use oxygen as a final electron acceptor in a respiratory chain. [ aero- + G. bios, ...
1. Living in air. 2. Relating to an aerobe. SYN: aerophilic, aerophilous.
Aerobic exercise
Brisk physical activity requiring the heart and lungs to work harder to meet the body's increased oxygen demand. Aerobic exercise promotes the circulation of oxygen through the ...
The study of atmospheric constituents, living and nonliving, of biological significance, e.g., airborne spores, pathogenic bacteria, allergenic substances, pollutants.
An apparatus for determining the bacterial content of the air. [ aero- + G. bios, life, + skopeo, to view]
Existence in an atmosphere containing oxygen. [ aero- + G. biosis, mode of living]
Relating to aerobiosis.
Distention of a small natural cavity with gas. [ aero- + G. kele, tumor]
A genus of aerobic Gram-positive cocci occurring as airborne saprophytes; they produce α-hemolysis on blood agar and grow in the presence of 40% bile. A. viridans, the type ...
Obsolete term for distention of the vagina with gas. [ aero- + G. kolpos, lap, hollow]
SYN: subcutaneous emphysema. [ aero- + G. derma, skin, + ektasis, a stretching out]
Dental pain caused by either increased or reduced atmospheric pressure. SYN: aero- odontalgia, aero- odontodynia. [ aero- + G. odous, tooth, + algos, pain] - primary a. dental ...
The science of the effect of either increased or reduced atmospheric pressure on the teeth. [ aero- + G. odous, tooth]
aerodynamic size
In aerosols, the particle size with unit density that best represents the aerodynamic behavior of a particle.
The study of air and other gases in motion, the forces that set them in motion, and the results of such motion. [ aero- + G. dynamis, force]
Distention of the stomach with gas. - blocked a. retention of gas in the stomach due to spasm of the sphincteric region of the lower esophagus which prevents belching.
A gas-forming microorganism.
Production of gas, as by a microorganism. [ aero- + G. genesis, origin]
SYN: aviation medicine.
A vernacular term used to refer to any member of the genus Aeromonas.
A genus of Gram-negative, oxidase-positive, aerobic, facultatively anaerobic bacteria (family Vibrionaceae) containing rod-shaped to coccoid cells; motile cells ordinarily ...
An upper region of the atmosphere, between the stratosphere and outer space, in which gas particles are so sparse as to provide almost no support for man's physiologic ...
aerophagia, aerophagy
An abnormal swallowing of air as seen in crib-biting and wind-sucking. SYN: pneumophagia. [ aero- + G. phago, to eat]
aerophil, aerophile
1. Air-loving. 2. An aerobic organism (aerobe), especially an obligate aerobe. [ aero- + G. philos, fond]
An abnormal and persistent fear of flying. Sufferers experience severe anxiety even though they usually realize that the flying does not pose a threat commensurate with their ...
Treatment of disease by compressed (or rarified) air. [ aero- + G. piesis, pressure, + therapeia, medical treatment]
An organism or a substance carried by air, e.g., bacterium, pollen, grain. [ aero- + G. planktos, ntr. -on, wandering]
SYN: sialoaerophagy.
Sinus troubles, particularly with pain, due to changing atmospheric pressures, as when going up or down in a plane. Also called barosinusitis or sinus barotrauma. * * * SYN: ...
Generation of gas in the tissues. [ aero- + G. -osis, condition]
A fine mist or spray which contains minute particles. An aerosol can administered by a nebulizer and inhaled as form of treatment. An aerosol can conversely cause disease. For ...
Dispersion in air of a liquid material or a solution in the form of a fine mist, usually for therapeutic purposes, especially to the respiratory passages.
aerotherapeutics, aerotherapy
Treatment of disease by fresh air, by air of different degrees of pressure or rarity, or by air medicated in various ways.
Middle ear problems due to changing atmospheric pressures, as when a plane descends to land. The problems include ear pain, ringing, diminished hearing and, sometimes, dizziness. ...
aerotitis media
SYN: barotitis media. [ aero- + G. ous, ear, + -itis, inflammation]
1. An instrument for estimating the tension or pressure of a gas. 2. SYN: tonometer (2). [ aero- + G. tonos, tension, + metron, measure]
Relating to Aesculapius, the art of medicine, or a medical practitioner. SYN: esculapian. [L. Aesculapius, G. Asklepios, the god of medicine]
That stick with the snake curled around it is the staff (the rod) of Aesculapius (also called Asklepios), the ancient god of medicine. His Greek name was Asklepios and his Roman ...
SYN: esculin.
SYN: estival.
The study of the causes. For example, of a disorder. The word "aetiology" is mainly used in medicine, where it is the science that deals with the causes or origin of disease, the ...
1. Abbreviation for acid-fast bacillus. See acid-fast. 2. Abbreviation for aortofemoral bypass (vascular prosthetic surgery), the surgical procedure or its result.
Without fever, denoting apyrexia; having a normal body temperature. SYN: apyretic, apyrexial.
Without relation to a fetus or intrauterine life.
The emotional feeling, tone, and mood attached to a thought, including its external manifestations. [L. affectus, state of mind, fr. afficio, to have influence on] - blunted a. a ...
affect display
Facial expressions, postures, and gestures indicating emotional states.
1. A moderate feeling of tenderness, caring, or love. 2. An abnormal condition of body or mind. [L. affectio, fr. af-ficio, to affect, influence]
Pertaining to mood, emotion, feeling, sensibility, or a mental state.
SYN: feeling tone.
Pertaining to muscular manifestations associated with affective tone.
Carrying toward. A vein is an afferent vessel since it carries blood toward from the heart. An afferent nerve carries impulses toward the central nervous system. The opposite of ...
1. In chemistry, the force that impels certain atoms to bind to or unite with certain others to form complexes or compounds; chemical attraction. 2. Selective staining of a ...
Pertaining to a marriage in which the partners are related, not by consanguinity, but through another marriage. [L. affinis, related by marriage, fr. ad, to + finis, limit]
The stage in autosuggestion in which one exhibits a positive reactive tendency. [L. affirmatio, fr. affirm, to make strong, fr firmus, strong]
Pouring of water upon the body or any of its parts for therapeutic purposes. [L. af- fundo, to pour into]
Abbreviation for anterior facial height.
Denoting a biological structure that does not contain fibrils.
The absence of fibrinogen in the plasma. SEE ALSO: hypofibrinogenemia. - congenital a. [MIM*202400] a rare disorder of blood coagulation in which little or no fibrinogen can be ...
A genus of Gram-negative, oxidase-positive, motile, nonfermenting bacteria that have been placed in the class Proteobacteria. They are morphologically variable, appearing as rods ...
A disease caused by ingestion of aflatoxin.
A toxin produced by mold that is hepatotoxic (can damage the liver) and may possibly lead to liver cancer. Aflatoxins are known to cause cancer in animals. The fungi that produce ...
AFO (ankle-foot orthosis)
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.
See A. phenomenon.
Abbreviation for α-fetoproteins. See fetoproteins.
AFP (alpha-fetoprotein)
AFP is a plasma protein that is normally produced by the fetus. It serves as the basis for some valuable tests. AFP is manufactured principally in the fetus's liver and, also, ...
African tapeworm
The beef tapeworm (Taenia saginata), the most common of the big tapeworms that parasitizes people, contracted from infected raw or rare beef. Can grow to be 12-25 feet (3.6-7.5 ...
African tick typhus
One of the tick-borne rickettsial diseases of the eastern hemisphere, similar to Rocky Mountain spotted fever, but less severe, with fever, a small ulcer (tache noire) at the ...
The placenta + the fetal membranes that are normally expelled from the uterus after the birth of the baby. Hence, the "afterbirth." The placenta is of course the organ ...
1. The care and treatment of a patient after an operation,delivery, or convalescence from an illness. 2. Following psychiatric hospitalization, a continuing program of ...
Additional treatment of a tissue specimen with chromate or a metal mordant to impart special staining properties. SYN: postchroming.
A muscular contraction persisting a noticeable time after the stimulus has ceased.
An electrical current induced in a muscle upon the termination of a constant current that has been passed through it.
Persistance of response of muscle or neural elements after cessation of stimulation. Myotonia is a clinical manifestation of prolonged muscle a..
A physical, physiologic, psychologic, or emotional effect that continues after removal of the stimulus. See flashback.
The treatment of a fixed and hardened histologic specimen of nervous tissue with gold salts.
Persistence of a visual response after cessation of the stimulus. SYN: accidental image, negative image. - negative a. a. in which the lightness relationship is reversed; if ...
SYN: aftersensation.
1. The arrangement of a muscle so that, in shortening, it lifts a weight from an adjustable support or otherwise does work against a constant opposing force to which it is not ...
Involuntary arm abduction that follows sustained isometric contraction of the deltoid and supraspinatus muscles (usually performed by pushing the upper extremity forcibly and ...
Painful cramplike contractions of the uterus occurring after childbirth.
SYN: aftersensation.
The small change in electrical potential in a stimulated nerve that follows the main, or spike, potential; it consists of an initial negative deflection followed by a positive ...
Subjective persistence of sensation after cessation of stimulus. SYN: afterimpression, afterperception.
Subjective persistence of an auditory sensation after the stimulus stops.
Subjective persistence of a gustatory sensation after contact with the stimulating substance has ceased.
Subjective persistence of tactile sensation after cessation of the stimulus; a form of aftersensation.
SYN: foot-and-mouth disease. [Sp. fiebre a., aphthous fever]
1. Symbol for silver (argentum). 2. Abbreviation for antigen.
Absence of milk in the breasts after childbirth. SYN: agalactosis. [G. a- priv. + gala (galakt-), milk]
Absence of the secretion or flow of breast milk. [G. a- priv. + gala, milk, + rhoia, a flow]
SYN: agalactia.
Relating to agalactia, or to the diminution or absence of breast milk.
A protozoan organism produced by asexual multiple fission. SEE ALSO: schizogony. [G. a- priv. + gametes, husband]
Denoting nonsexual reproduction, as by fission, budding, etc. SYN: agamous.
Absence of, or extremely low levels of, the gamma fraction of serum globulin; sometimes used loosely to denote absence of immunoglobulins in general. SEE ALSO: ...
SYN: schizogony. [G. agamos, unmarried, + kytos, cell, + genesis, becoming]
A name given to immature filarial forms, the genera of the adult forms being undetermined. [G. agamos, unmarried, + L. filum, thread]
SYN: asexual reproduction. [G. agamos, unmarried, + genesis, production]
Indicating asexual reproduction.
SYN: asexual reproduction. [G. agamos, unmarried, + gonos, offspring]
Agamomermis culicis
A species of nematode parasitic in the mosquito; a few cases have been recorded in humans, usually larval worms found emerging from body openings, presumably after ingestion of ...
SYN: schizont. [G. agamos, unmarried, + on (ont-), being]
SYN: agamic. [G. agamos, unmarried]
Without ganglia.
The state of being without ganglia; e.g., absence of ganglion cells from the myenteric plexus as a characteristic of congenital megacolon. [G. a- priv. + ganglion + -osis, ...
The doctrine that exalts nonsexual (brotherly) love. [G. agape, brotherly love]
A complex polysaccharide (a sulfated galactan) derived from seaweed (various red algae); used as a solidifying agent in culture media; it has the valuable property of melting at ...
The dried fruit body of Polyporus officinalis (family Polyporaceae), occurring in the form of brownish or whitish light masses, which contains a. acid. SYN: amadou. [G. ...
agaric acid
Obtained from agaric and responsible for the anhidrotic action of the mushroom; used as an anhidrotic agent.
A large genus of mushrooms of which many are edible and others poisonous. [L. agaricum, fr. G. agarikon, a tree fungus]
A polysaccharide found in agar preparations consisting of d-galactose linked β1,3 glycosidically. Some of the galactosyl units are sulfated.
The neutral linear polysaccharide fraction found in agar preparations, generally composed of d-galactose and altered 3,6-anhydrogalactose residues; used in chromatography and ...
Without stomach or digestive tract. [G. a- priv. + gaster, belly]
Lessened nervous control of the stomach. [G. a- priv. + gaster, belly, + neuron, nerve]
Abbreviation for automatic gain control.
1. The period that has elapsed since birth. 2. One of the periods into which human life is divided, distinguished by physical evolution, equilibrium, and involution; e.g., the ...
Age-related macular degeneration
A disease with it onset usually after age 60 that progressively destroys the macula, the central portion of the retina, impairing central vision. Age-related macular ...
Agency for Toxic Substances and Disease Registry
An agency of the U.S. Department of Health and Human Services under the Public Health Service that works with states and other federal agencies to prevent exposure to hazardous ...
Lack of development of something. For example, agenesis of a toe means that toe failed to form. * * * Absence or failure of formation of any part. [G. a- priv. + genesis, ...
Agenesis of the gallbladder
This is a condition in which the gallbladder fails to develop. This happens in approximately one out of every 1,000 people. Gallbladder agenesis occurs alone in more than ...
Agenesis, sacral
Failure of formation of all or part of the sacrum (the lowest section of the spine). Currarino syndrome is a condition characterized by the combination of: {{}}Partial absence ...
Congenital absence of genitalia.
Markedly defective formation or absence of the genitalia; usually accompanied by protrusion of the abdominal viscera through an incomplete abdominal wall. [G. a- priv. + genos, ...
1. An active force or substance capable of producing an effect. For agents not listed here, see the specific name. 2. A disease, a factor such as a microorganism, chemical ...
Agent Orange
An herbicide and defoliant, consisting of (2,4,5-trichlorophenoxy)acetic acid, (2,4-dichlorophenoxy) acetic acid, and dioxin, that was widely used in the Vietnam War; it has ...
Agent, anti-infective
Something capable of acting against infection, by inhibiting the spread of an infectious agent or by killing the infectious agent outright. Anti-infective is a general term that ...
Agent, antibiotic
A drug used to treat bacterial infections. The original definition of an antibiotic was a substance produced by one microorganism that selectively inhibits the growth of another ...
Agent, antifungal
A drug used to treat fungal infections. Examples of antifungal drugs include miconazole (MONISTAT) and clotrimazole (LOTRIMIN, MYCELEX).
Agent, antihypertensive
As the name suggests, a drug aimed at reducing high blood pressure (hypertension).
Agent, antimicrobial
A drug used to treat a microbial infection. " Antimicrobial" is a general term that refers to a group of drugs that includes antibiotics, antifungals, antiprotozoals, and ...
Agent, antiprotozoal
An agent that destroys protozoa or inhibits their growth and ability to reproduce. A few of the protozoa of medical importance include Plasmodium (the cause of malaria); ...
Agent, antiviral
An agent that kills viruses or suppresses their replication and, hence, inhibits their capability to multiply and reproduce. For example, amantadine (BRAND name: SYMMETREL) is a ...
Agent, tocolytic
A medication that can inhibit labor, slow down or halt the contractions of the uterus. Tocolytic agents are widely used today to treat premature labor and permit pregnancy to ...
An appearance of youth in old age. [G. a., eternal youth, fr. a- priv. + geras, old age]
Loss or absence of the sense of taste. It may be: 1) general to all tastants (total), partial to some tastants, or specific to one or more tastants; 2) due to transport disorders ...
SYN: ageusia.
An eminence, projection, or shallow ridge. [L. mound] - a. nasi [TA] an elevation on the lateral wall of the nasal cavity lying between the atrium of the middle meatus and the ...
agglomerate, agglomerated
SYN: aggregated. [L. ag-glomero, to wind into a ball; from ad, to, + glomus, a ball]
SYN: aggregation.
A substance that holds parts together or causes agglutination. [L. ad, to + gluten, glue]
To accomplish, or be subjected to, agglutination.
1. The process by which suspended bacteria, cells, or other particles are caused to adhere and form into clumps; similar to precipitation, but the particles are larger and are ...
Causing, or able to cause, agglutination.
1. An antibody that causes clumping or agglutination of the bacteria or other cells that either stimulated the formation of the a., or contain immunologically similar, reactive ...
An antigenic substance that stimulates the formation of specific agglutinin, which can cause agglutination of cells that contain the antigen or particles coated with the ...
Capable of causing the production of an agglutinin. SYN: agglutogenic.
Readily undergoing pronounced agglutination. [ agglutination + G. phileo, to love]
SYN: agglutinogen.
SYN: agglutinogenic.
Candidate gene for otosclerosis located at 15q25 to q26.
1. To unite or come together in a mass or cluster. 2. The total of individual units making up a mass or cluster. [L. ag-grego, pp. -atus, to add to, fr. grex (greg-), a flock] - ...
Collected together, thereby forming a cluster, clump, or mass of individual units. SYN: agglomerate, agglomerated, agminate, agminated.
A crowded mass of independent but similar units; a cluster. SYN: agglomeration. - familial a. occurrence of a trait in more members of a family than can be readily accounted for ...
An instrument for measuring platelet aggregation by monitoring over time the changes in optic density of a platelet suspension treated with aggregating agents such as ADP, ...
A substance of microbial origin postulated to inhibit the resistance mechanisms of the host. [L. agressor, an assailant, fr. ad-gredio, pp. -gressus, to attack]
A domineering, forceful, or assaultive verbal or physical action toward another person as the motor component of the affects of anger, hostility, or rage. [L. aggressio, fr. ...
1. Denoting aggression. 2. Denoting a competitive forcefulness or invasiveness, as of a behavioral pattern, a pathogenic organism, or a disease process.
Aggressive angiomyxoma
A slow-growing tumor of stromal cells which occurs primarily in the genital and pelvic regions. This tumor is much more common in women. It can range from relatively small tumors ...
The process of becoming older, a process that is genetically determined and environmentally modulated. Research into aging: To sum up the state of research into aging is well ...
Aging, National Institute on (NIA)
One of the US National Institutes of Health (NIH). The mission of the National Institute on Aging is to “lead a national program of research on the biomedical, social, and ...
SYN: agitophasia.
Abnormally rapid speech in which words are imperfectly spoken or dropped out of a sentence. SYN: agitolalia. [L. agito, to hurry, + G. phasis, speech]
Having no glomeruli; said especially of a kidney in which the glomeruli have been destroyed, or kidneys of certain fish, e.g., toad fish, that possess tubules but no glomeruli.
Congenital absence of the tongue. [G. a- priv. + glossa, tongue]
Congenital absence of the tongue, with a malformed (usually closed) mouth. [G. a- priv. + glossa, tongue, + stoma, mouth]
The portion of a glucoside other than the glucose. [G. a- priv. + glucose + -on]
Inability to swallow. SEE ALSO: dysphagia.
aglycon, aglycone
The noncarbohydrate portion of a glycoside ( e.g., digoxigenin). [G. a- priv. + glykys, sweet]
See aglycon.
Absence of carbohydrate in the urine.
Relating to aglycosuria.
Obsolete term for aggregation. [L. a multitude] - a. peyerianum SYN: aggregated lymphoid nodules of small intestine, under nodule.
agminate, agminated
SYN: aggregated. [L. agmen, a multitude]
Congenital absence of the lower jaw, usually accompanied by approximation of the ears. SEE ALSO: otocephaly, synotia. [G. a- priv. + gnathos, jaw]
Relating to agnathia.
SYN: agnosia. [G. agnoia, want of perception]
SYN: idiopathic. [G. a- priv. + gnosis, knowledge, + genesis, origin]
An inability to recognize sensory inputs (sight, sound, touch). The most common agnosia is a result of brain injury damaging the rear part of the brain causing visual agnosia ...
SYN: anodontia.
agomphosis, agomphiasis
SYN: anodontia. [G. a- priv. + gomphos, peg, bolt]
Denoting the absence of gonads.
Relating to the process of dying or the moment of death, so called because of the former erroneous notion that dying is a painful process.
A drug that binds to a receptor of a cell and triggers a response by the cell. An agonist often mimics the action of a naturally occurring substance. An agonist produces an ...
Agonist, LHRH
A compound that is similar to LHRH (luteinizing hormone-releasing hormone) in structure and is able to it performs its action(s). Luteinizing hormone-releasing hormone is a ...
Intense pain or anguish of body or mind. [G. agon, a struggle, trial]
An abnormal and persistent fear of public places or open areas, especially those from which escape could be difficult or help not immediately accessible. Persons with ...
Relating to or characteristic of agoraphobia.
SYN: Dasyprocta. [Fr., fr. native Indian]
An appliance for clamping together the edges of a wound, used in lieu of sutures. [Fr. agrafe, a hook, clasp]
SYN: agrammatism.
A form of aphasia characterized by an inability to construct a grammatical sentence, and the use of unintelligible or incorrect words; caused by a lesion in the dominant temporal ...
SYN: agrammatism.
A nongranular leukocyte. [G. a- priv. + L. granulum, granule, + G. kytos, cell]
A marked decrease in the number of granulocytes. Granulocytes are a type of white blood cell filled with microscopic granules that are little sacs containing enzymes that digest ...
Agranulocytosis, infantile genetic
Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting infection). These children suffer frequent infections from bacteria ...
Capable of forming nongranular cells, and incapable of forming granular cells. [G. a- priv. + L. granulum, granule, + G. plastikos, formative]
Inability to write properly in the absence of abnormalities of the limb; often accompanies aphasia and alexia; caused by lesions in various portions of the cerebrum, especially ...
Relating to or marked by agraphia.
That part of a processed antigen that binds to the major histocompatibility complex molecule.
A fever (such as from malaria) that is marked by paroxysms of chills, fever, and sweating recurring regular intervals. Also a fit of shivering, a chill. Hence, ague can refer to ...
Acronym for atypical glandular cells of undetermined significance, under cell. SEE ALSO: Bethesda system.
A form of agoraphobia characterized by a morbid fear of being in the street. [G. agyia, street, + phobos, fear]
Congenital lack or underdevelopment of the convolutional pattern of the cerebral cortex. SYN: lissencephalia, lissencephaly. [G. a- priv. + gyros, circle]
Abnormal and persistent fear of crossing streets, highways and other thoroughfares; fear of thoroughfares themselves. Sufferers experience anxiety even though they realize that ...
Lacking haustra, smooth; describing the appearance of the colon on radiographs of a barium enema in ulcerative colitis. [G. a- priv. + haustra]
AHD (alveolar hydatid disease)
1. A parasitic disease caused by the larval stage of a microscopic tapeworm Echinococcus multilocularis. AHD is found worldwide, mostly in northern latitudes. in central Europe, ...
Abbreviation for antihemophilic factor A.
Abbreviation for antihemophilic globulin.
Symbol for allohydroxylysine.
Inability to recognize differences of density, weight, and coarseness. [G. a- priv. + hyle, matter, + gnosis, recognition]
J. Dennis, 20th century French neurologist. See A. syndrome.
Aicardi syndrome
A genetic disorder characterized by the partial or complete agenesis (absence) of the corpus callosum (the structure that links the 2 hemispheres of the brain), infantile spasms ...
Morbid fear of being touched by the finger or any slender pointed object. [G. aichme, a point, + phobos, fear]
Abbreviation for donor of heterologous (artificial) insemination. - programmable hearing a. multichannel hearing a. that can use more than one level-dependent frequency response ...
AID (artificial insemination by donor)
A procedure in which a fine catheter (tube) is inserted through the cervix (the natural opening of the uterus) into the uterus (the womb) to deposit a sperm sample from a donor ...
Aid, vibrotactile
A mechanical instrument that helps individuals who are hard of hearing to detect and interpret sound through their sense of touch. It is called a vibrotactile aid because it ...

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