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Слова на букву taxa-ulce (2629)

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thyronine
An amino acid with a diphenyl ether group in the side chain; occurs in proteins only in the form of iodinated derivatives (iodothyronines), such as thyroxine.
thyropalatine
Denoting the palatopharyngeus muscle.
thyroparathyroidectomy
Excision of thyroid and parathyroid glands.
thyropathy
A disorder of the thyroid gland. [thyro- + G. pathos, suffering]
thyroperoxidase
A protein that participates in iodine metabolism in the thyroid follicle or in the follicular space; it utilized H2O2 to produce I+.
thyropharyngeal
Denoting the t. portion of the inferior pharyngeal constrictor muscle.
Thyroplasty
A surgical technique designed to improve the voice by altering the cartilages of the larynx (the voice box), which houses the vocal folds (the vocal cords) in order to change the ...
thyroprival
Relating to thyroprivia, denoting hypothyroidism produced by disease or thyroidectomy. SYN: thyroprivic, thyroprivous. [thyro- + L. privus, deprived of]
thyroprivia
A state characterized by reduced activity of the thyroid.
thyroprivic, thyroprivous
SYN: thyroprival.
thyroprotein
1. SYN: thyroglobulin (1). 2. An iodinated protein, usually casein, that has thyroxine activity.
thyroptosis
Downward dislocation of the thyroid gland. [thyro- + G. ptosis, a falling]
thyrotomy
1. Any cutting operation on the thyroid gland. 2. SYN: laryngofissure. [thyro- + G. tome, a cutting]
thyrotoxic
Denoting thyrotoxicosis.
thyrotoxicosis
The state produced by excessive quantities of endogenous or exogenous thyroid hormone. [thyro- + G. toxikon, poison, + -osis, condition] - apathetic t. chronic t., presenting ...
thyrotoxin
1. A hypothetical substance formerly believed to be an abnormal product of diffusely hyperplastic thyroid glands in persons with Graves disease, and presumed to be the cause of ...
thyrotroph
A cell in the anterior lobe of the pituitary that produces thyrotropin.
thyrotrophic
SYN: thyrotropic. [thyro- + G. trophe, nourishment]
thyrotrophin
SYN: thyrotropin.
thyrotropic
Stimulating or nurturing the thyroid gland. SYN: thyrotrophic. [thyro- + G. trope, a turning]
thyrotropin
A glycoprotein hormone produced by the anterior lobe of the hypophysis that stimulates the growth and function of the thyroid gland; it also is used as a diagnostic test to ...
thyroxine
The l-isomer is the active iodine compound existing normally in the thyroid gland and extracted therefrom in crystalline form for therapeutic use; also prepared synthetically; ...
Thysanosoma actinoides
Fringed tapeworm of sheep, a relatively short, thick worm (family Anocephalidae) in which the posterior borders of the proglottids are fringed. It inhabits the small intestine, ...
TI
The delay time between the inverting pulse and the “read” pulse in the inversion recovery experiment, in magnetic resonance imaging.
Ti
Symbol for titanium.
TIA
Abbreviation for transient ischemic attack.
Tibia
The larger of the two bones in the leg (the smaller one being the fibula). The tibia is familiarly known as the shinbone. "Tibia" is a Latin word meaning both shinbone and ...
Tibia vara
A condition characterized by disturbance of normal growth in the inner part of the upper tibia. Tibia vara causes a bowlegged gait, and can impair the knees significantly. It is ...
tibiad
In a direction toward the tibia. [tibia + L. ad, to]
tibial
Relating to the tibia or to any structure named from it; also denoting the medial or t. aspect of the lower limb. SYN: tibialis [TA]. [L. tibialis]
Tibial bowing
Improper growth of the tibia in the leg, causing bowlegs or other leg problems. The tibia may bow anteriorly (in the front) or posteriorly (in the back). See also tibia vara.
tibiale posticum
SYN: os tibiale posterius.
tibialis
SYN: tibial. [L.]
tibio-
The tibia. [L. tibia, the shinbone]
tibiocalcanean
Relating to the tibia and the calcaneus.
tibiofascialis
See entries under musculus t..
tibiofemoral
Relating to the tibia and the femur.
tibiofibular
Relating to both tibia and fibula; denotes especially the joints and ligaments between the two bones. SYN: peroneotibial, tibioperoneal.
tibionavicular
Relating to the tibia and the navicular bone of the tarsus. SYN: tibioscaphoid.
tibioperoneal
SYN: tibiofibular.
tibioscaphoid
SYN: tibionavicular.
tibiotarsal
Relating to the tarsal bones and the tibia. SYN: tarsotibial.
Tic
A repetitive movement that is difficult, if not impossible, to control. Tics can affect any group of muscles. The most common are facial tics, such as eye- blinking, ...
Tic disorder
A disorder characterized by the presence of tics. If both motor and vocal tics are present for more than six months, the diagnosis of Tourette syndrome may be made. Diagnosis is ...
ticarcillin disodium
The disodium salt of 6-(α-carboxy-α-thien-3-ylacetamido)penicillanic acid; a bactericidal antibiotic useful in treating Pseudomonas aeruginosa infections and similar in effect ...
tick
An acarine of the families Ixodidae (hard ticks) or Argasidae (soft ticks), which contain many bloodsucking species that are important pests of humans and domestic birds and ...
Tick bite
A bite from a bloodsucking, parasitic insect that punctures the skin with a sharp beak. The tic burrows into the skin with its head. Tick bites can carry serious illness, ...
Tick fever
Also known as Rocky Mountain spotted fever, an acute febrile (feverish) disease initially recognized in the Rocky Mountain states, caused by Rickettsia rickettsii transmitted by ...
Tick typhus
Also known as Rocky Mountain spotted fever, an acute febrile (feverish) disease initially recognized in the Rocky Mountain states, caused by Rickettsia rickettsii transmitted by ...
Tick-borne disease
A disease carried by or caused by a tick. In the United States, the tick-borne diseases include: {{}}Babesiosis (a malaria-like infection) Colorado tick fever (generally in the ...
Tick-borne rickettsioses of the eastern hemisphere
There are 3 known diseases caused by infection with rickettsial agents. They are North Asian tick-borne rickettsiosis, Queensland tick typhus, and African tick typhus (fičvre ...
Tick-borne rickettsiosis, north Asian
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 (eschar) at the site of ...
tickling
Denoting a peculiar itching or tingling sensation caused by excitation of surface nerves, as of the skin by light stroking.
ticolubant
A leukotriene B4 receptor antagonist used as an antipsoriatic.
tid (on prescription)
Seen on a prescription, tid means three times a day. It is an abbreviation for "ter in die" which in Latin means three times a day. The abbreviation "tid" is sometimes written ...
tidal
Relating to or resembling the tides, alternately rising and falling.
tide
An alternate rise and fall, ebb and flow, or an increase or a decrease. [A.S. tid, time] - acid t. a temporary increase in the acidity of the urine occurring during fasting. SYN: ...
Tiedemann
Friedrich, German anatomist, 1781–1861. See T. gland, T. nerve.
Tietze
Alexander, German surgeon, 1864–1927. See T. syndrome.
Tight foreskin
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 ...
tiglate
A salt or ester of tiglic acid.
tiglian
Original trivial name for the saturated form of phorbol. [fr. Croton tiglium (Euphorbiaceae)]
tiglic acid
An unsaturated fatty acid present in glycerides in croton oil.
tiglyl-CoA
An intermediate in the degradation of l-isoleucine. SYN: tiglyl-coenzyme A.
tiglyl-coenzyme A
SYN: tiglyl-CoA.
tigroid
See chromophil substance. [G. tigroeides, fr. tigris, tiger, + eidos, appearance]
tigrolysis
SYN: chromatolysis. [ tigroid + G. lysis, dissolution]
TIL
Abbreviation for tumor-infiltrating lymphocytes, under lymphocyte.
Tillaux
Paul Jules, French surgeon, 1834–1904. See spiral of T..
tilorone
A small synthetic molecule used to induce interferon in mice.
TILS
Abbreviation for tumor-infiltrating lymphocytes, under lymphocyte.
tilt
Slope. - pantoscopic t. an oblique astigmatism caused by slanting a spherical lens so that light rays strike the lens at a nonperpendicular angle, altering the spherical and ...
Tilt-table test
Tilt-table testing involves placing the patient on a table with a foot-support. The table is tilted upward and the blood pressure and pulse are measured and symptoms are recorded ...
timbre
The distinguishing quality of a sound, by which one may determine its source, based principally on the distribution of overtones. SYN: tone color. [Fr.]
time
1. That relation of events which is expressed by the terms past, present, and future, and measured by units such as minutes, hours, days, months, or years. 2. A certain period ...
Time, prothrombin
A clotting test, the prothrombin time is done to test the integrity of part of the clotting scheme. The prothrombin time is commonly used as a method of monitoring the ...
TIMI
Acronym for thrombolysis in myocardial infarction; a large multicenter controlled clinical trial.
timnodonic acid
A 20-carbon fatty acid with five cis double bonds located on carbons 5, 8, 11, 14, and 17; an important component of fish oils; a precursor to the 3-series prostaglandins, e.g., ...
timolol maleate
A β-adrenergic blocking agent used in the treatment of hypertension and used in eyedrops in the treatment of chronic open-angle glaucoma.
tin
A metallic element, atomic no. 50, atomic wt. 118.710. SYN: stannum. [AS, t.] - t. oxide SYN: stannic oxide.
tin-113
A radioisotope of tin with a physical half-life of 115.1 days; used in the manufacture of radionuclide generators for the production of indium-113m.
tinct
Abbreviation of L. tinctura, tincture.
tinctable
Stainable.
tinction
1. A stain; a preparation for staining. 2. The act of staining. [L. tingo, pp. tinctus, to dye]
tinctorial
Relating to coloring or staining. [L. tinctorius, fr. tingo, to dye]
tinctura
SYN: tincture. [L. a dyeing, fr. tingo, pp. tinctus, to dye]
tincture
An alcoholic or hydroalcoholic solution prepared from vegetable materials or from chemical substances; most tinctures are prepared by percolation or by maceration. The ...
tine
1. In dentistry, the slender, pointed end of an explorer. 2. An instrument used to introduce antigen, such as tuberculin into the skin, and usually containing several individual ...
tinea
A fungus infection ( dermatophytosis) of the keratin component of hair, skin, or nails. Genera of fungi causing such infection are Microsporum, Trichophyton, and ...
Tinea barbae
A superficial fungal infection of the skin, affecting the bearded area of the face and neck, with swellings and marked crusting, often with itching, sometimes causing the hair to ...
Tinea capitis
A superficial fungus infection of the skin, affecting the scalp. Also known as ringworm. This disorder occurs most commonly in children, especially those in late childhood and ...
Tinea incognito
Tinea corporis, a common fungalinfection of the skin, better known as ringworm, whose appearance has been modified by the application of high-potency topical steroids in a way ...
Tinea unguium
The most common fungus infection of the nails, also called onychomycosis. Onychomycosis makes the nails look white and opaque, thickened, and brittle. Those at increased risk ...
Tinel
Jules, French neurologist, 1879–1952. See T. sign.
Tinel's sign
An examination test that is used by doctors to detect an irritated nerve. Tinel's sign is performed by lightly banging (percussing) over the nerve to elicit a sensation of ...
tinfoil
1. Tin rolled into extremely thin sheets. 2. A base metal foil used as a separating material, as between the cast and denture base material during flasking and curing ...
tingibility
The property of being tingible.
tingible
Capable of being stained. [L. tingo, to dye]
tingle
To feel a peculiar pricking sensation.
tingling
A pricking type of paresthesia. - distal t. on percussion (DTP) SYN: Tinel sign.
tinidazole
An antiprotozoal agent.
Tinnitus
: " Ringing in the ears" or another noise that seems to originate in the ears or head. Tinnitus is due to diverse causes including ear infections, fluid in the ears, Meniere ...
tint
A shade of color varying according to the amount of white admixed with the pigment. [L. tingo, pp. tinctus, to dye]
tioconazole
An antifungal agent.
tip
1. A point; a more or less sharp extremity. 2. A separate, but attached, piece of the same or another structure, forming the extremity of a part. - t. of auricle SYN: apex of ...
tipping
A tooth movement in which the angulation of the long axis of the tooth is altered.
tiprenolol hydrochloride
A β-receptor blocking agent.
TIPS
TIPS stands for "transjugular, intrahepatic, portosystemic shunt." It is a shunt (tube) placed between the portal vein which carries blood from the intestines to the liver and ...
Tiselius
Arne W.K., Swedish biochemist and Nobel laureate, 1902–1971. See T. apparatus, T. electrophoresis cell.
Tissierella praeacuta
SYN: Bacteroides praeacutus.
Tissot
Jules, early 20th century French physiologist. See T. spirometer.
Tissue
: A tissue in medicine is not like a piece of tissue paper. It is a broad term that is applied to any group of cells that perform specific functions. A tissue in medicine need not ...
Tissue, connective
A material made up of cells that form fibers in the framework providing a support structure for other body tissues. Cartilage and bone are specialized forms of connective ...
Tissue, lymphoid
A part of the body's immune system that helps protect it from bacteria and other foreign entities. Lymphoid tissue is rich in lymphocytes (and accessory cells such as macrophages ...
tissue-trimming
SYN: border molding.
tissular
Relating or pertaining to a tissue.
titanium
A metallic element, atomic no. 22, atomic wt. 47.88. [Titans, in G. myth., sons of Earth] - t. dioxide TiO2; contains not less than 99.0% and not more than 100.5% of TiO2, ...
titer
The standard of strength of a volumetric test solution; the assay value of an unknown measure by volumetric means. [Fr. titre, standard]
TITh
Abbreviation for 3,5,3′-triiodothyronine.
titillation
The act or sensation of tickling. [L. titillatio, fr. titillo, pp. -atus, to tickle]
titin
A very large fibrous protein that connects thick myosin filaments to Z discs in the sarcomere.
titrant
In chemistry, the solution that is added (titrated with) in a titration.
titrate
To analyze volumetrically by a solution (the titrant) of known strength to an end point.
titration
Volumetric analysis by means of the addition of definite amounts of a test solution to a solution of the substance being assayed. [Fr. titre, standard] - colorimetric t. a t. in ...
titubation
1. A staggering or stumbling in trying to walk. 2. A tremor or shaking of the head, of cerebellar origin. [L. titubo, pp. -atus, to stagger]
Tizzoni
Guido, Italian physician, 1853–1932. See T. stain.
Tl
Symbol for thallium.
TLC
Abbreviation for thin-layer chromatography; total lung capacity.
TLE
Abbreviation for thin-layer electrophoresis.
TLSO
Thoracolumbosacral orthosis. This is one of two main types of braces used to correct the lateral (sideways) curve of the spine in scoliosis. Patients can wear this brace to ...
TLV
Abbreviation for threshold limit value.
Tm
Symbol for thulium; transport maximum or tubular maximum. Symbol for temperature midpoint (kelvin); melting point.
tm
Symbol for temperature midpoint (Celsius).
TM
Abbreviation for transcendental meditation.
TM-mode
SYN: M-mode.
TMD
Abbreviation for temporomandibular joint dysfunction.
TMJ
Tempero-mandibular joint, the joint that hinges the lower jaw (mandible) to the skull. * * * Colloquial abbreviation for temporomandibular joint dysfunction.
TMJ syndrome
Disorder of the temporo-mandibular joint(s) causing pain usually in front of the ear(s).
TMP
Abbreviation for ribothymidylic acid; trimethoprim; sometimes for deoxyribothymidylic acid.
TMR
Stands for transmyocardial laser revascularization, a procedure by which a physician uses a laser to make holes in the heart to relieve the pain of severe angina. TMR has ...
Tn
Abbreviation for ocular tension.
TNF
Abbreviation for tumor necrosis factor.
TNM
Acronym for Tumor-Node-Metastasis. See T. staging.
TNP-470
An angiogenesis inhibitor used in the treatment of cancer to reduce blood vessel formation in tumors.
TNT
Abbreviation for trinitrotoluene.
Tobacco
: A South American herb, formally known as Nicotiana tabacum, whose leaves contain 2-8% nicotine and serve as the source of smoking and smokeless tobacco. Nicotiana tabacum ...
Tobacco smoke, environmental
: Tobacco smoke that is generated from the sidestream (the burning end) of a cigarette, pipe or cigar and the exhaled mainstream smoke (the smoke that is puffed out by smokers) ...
Tobacco smoking
: Directly inhaled tobacco smoke. Cigarette smoking, long known to cause cancer in humans, is generally held to be the leading preventable cause of cancer in developed countries. ...
tobramycin
An aminoglycoside antibiotic produced by Streptomyces tenebrarius, having bactericidal effects and used mainly in the treatment of Pseudomonas infections.
Toc- (prefix)
Stemming from the Greek word "tokos" meaning childbirth, we have toc-, toco-, tok-, and toko- as combining forms, all referring to labor or childbirth.
tocainide hydrochloride
An oral antiarrhythmic agent, similar in action to lidocaine, used in the treatment of ventricular arrhythmias.
Toco-
Prefix meaning childbirth. For example, tocolysis is the slowing or halting of labor. Sometimes spelled tok-, toko-. * * * Childbirth. [G. tokos, birth]
tocochromanol-3
An α-tocotrienol. See tocotrienol.
tocodynagraph
A recording of the force of uterine contractions. SYN: tocograph. [ toco- + G. dynamis, force, + graphe, a writing]
tocodynamometer
An instrument for measuring the force of uterine contractions. SYN: tocometer. [ toco- + G. dynamis, force, + metron, measure]
tocograph
SYN: tocodynagraph.
tocography
The process of recording uterine contractions. [ toco- + G. grapho, to write]
tocol
Fundamental unit of the tocopherols; 6-phytylhydroquinone is in equilibrium with, in the chromanol form, 2-methyl-2-(4,8,12-trimethyltridecyl)chroman-6-ol.
tocology
SYN: obstetrics. [ toco- + G. logos, study]
Tocolysis
The delaying or inhibition of labor during the birth process.
Tocolytic
Relating to the inhibition of labor, delaying or halting labor. * * * Denoting any pharmacologic agent used to arrest uterine contractions; often used in an attempt to arrest ...
Tocolytic agent
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 ...
tocometer
SYN: tocodynamometer.
tocopherol
1. Name given to vitamin E by its discoverer, but now a generic term for vitamin E and compounds chemically related to it, with or without biological activity; similar in ...
tocopherolquinone
An oxidized tocopherol, formed from the isomeric 2-methyl-2-phytyl-6-chromenol with methyl groups in one or more of positions 5, 7, and 8, by migration of an H atom from 6-OH ...
tocopherylquinone
SYN: tocopherolquinone.
Tocophobia
An abnormal and persistent fear of childbirth. A phobia is an unreasonable fear that can cause avoidance and panic. Phobias are a relatively common type of anxiety disorder. ...
tocoquinone
Class name for the 2,3,5-trimethyl-6-multiprenyl-1,4-benzoquinones.
tocotrienol
A tocol with three double bonds in the side chain, i.e., with three additional double bonds in the phytyl chain. The natural products carry methyls at one or more of positions ...
tocotrienolquinone
A tocotrienol in which the hydroquinone has been oxidized to a quinone (the chromanol has become a chromenol); the tocotrienolquinones carry α, β, γ, and δ prefixes in ...
TOCP
Abbreviation for triorthocresyl phosphate.
Tocus
Labor, childbirth. Directly from the Greek "tokos" meaning childbirth.
Tod
David, British surgeon, 1794–1856. See T. muscle.
Todaro
Francesco, Italian anatomist, 1839–1918. See T. tendon.
Todd
Robert B., English physician, 1809–1860. See T. paralysis, T. postepileptic paralysis.
toe
One of the digits of the feet. SYN: digitus pedis [TA], digits of foot. [A.S. ta] - fourth t. [IV] [TA] fourth digit of foot. SYN: digitus (pedis) quartus [IV] [TA]. - great t. ...
Toe sign
An important neurologic examination based upon what the toes do when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble. The toe sign, also called ...
toe-drop
Inability to dorsiflex the toes, usually due to paralysis of the toe extensor muscles.
Toenail
A toenail is produced by living skin cells in the toe. A toenail consists of several parts including the nail plate (the visible part of the nail), the nail bed (the skin beneath ...
Toenail, ingrown
A common disorder, particularly on the big (great) toe. The corner of the nail curves down into the skin, often due to mis-trimming of the nail, or due to shoes that are too ...
Toes, six
The presence of an extra sixth toe, a very common congenital malformation (birth defect This is called hexadactyly. The word hexadactyly literally means six digits. In medical ...
tofenacin hydrochloride
An anticholinergic drug.
Togaviridae
A family of viruses that includes two genera : Alphavirus, which includes eastern equine encephalitis, western equine encephalitis, and Venezuelan equine encephalitis virus, ...
togavirus
Any virus of the family Togaviridae. [L. toga, garment covering, + virus]
toilet
1. Cleansing of the obstetric patient after childbirth. 2. Cleansing of the surface of a wound after an operation preparatory to the application of the dressing. 3. In ...
Toison
J., French histologist, 1858–1950. See T. stain.
Tok-
From the Greek word "tokos" meaning childbirth, we have toc-, toco-, tok-, and toko- as combining forms, all referring to labor or childbirth.
Toker
Cyril, U.S. pathologist, *1930. See T. cell.
toko-
See toco-.
Toko- (prefix)
Stemming from the Greek word "tokos" meaning childbirth, we have toc-, toco-, tok-, and toko- as combining forms, all referring to labor or childbirth.
tolazamide
An oral hypoglycemic agent similar in use to tolbutamide.
tolazoline hydrochloride
An adrenergic α-receptor blocking agent used to augment blood flow in peripheral vascular disorders.
tolbutamide
An orally active hypoglycemic agent used in the management of adult-onset diabetes mellitus; it appears to stimulate the synthesis and release of endogenous insulin from ...
tolcyclamide
SYN: glycyclamide.
Toldt
Karl, Austrian anatomist, 1840–1920. See T. fascia, T. membrane, white line of T..
tolerance
1. The ability to endure or be less responsive to a stimulus, especially over a period of continued exposure. 2. The power of resisting the action of a poison or of taking a ...
Tolerance, immune
A state of unresponsiveness to a specific antigen (immune stimulus) or group of antigens to which a person is normally responsive. Immune tolerance can result from a number of ...
tolerant
Having the property of tolerance.
tolerize
To induce tolerance.
tolerogen
A substance that produces immunological tolerance.
tolerogenic
Producing immunologic tolerance.
tolhexamide
SYN: glycyclamide.
tolmetin
An anti-inflammatory drug used in the treatment of rheumatoid arthritis.
tolnaftate
A topical antifungal agent.
tolonium chloride
The medicinal grade of toluidine blue O, used as an antiheparin compound.
Tolosa
Eduardo, 20th century Spanish neurosurgeon. See T.-Hunt syndrome.
tolpropamine
A topical antipruritic agent.
toluene
A colorless liquid obtained by the dry distillation of tolu and other resinous bodies, and also derived from coal tar; its physical and chemical properties resemble those of ...
toluic acid
Methylbenzoic acid; an oxidation product of xylene.
Toluidine
A chemical compound implicated, along with aniline, in the causation of bladder cancer. Aniline and o-toluidine — both compounds are aromatic amines — are used in the ...
toluol
SYN: toluene.
toluoyl
CH3C6H4CO–; the radical of toluic acid.
toluylene red
SYN: neutral red.
tolyl
CH3C6H4–; the univalent radical of toluene.
Toma sign
See under sign.
tomentum, tomentum cerebri
The numerous small blood vessel s passing between the cerebral surface of the pia mater and the cortex of the brain. [L. a stuffing for cushions]
Tomes
Sir Charles S., English dentist, 1846–1928. See T. processes, under process. Sir John, English dentist and anatomist, 1815–1895. See T. fibers, under fiber, T. granular ...
Tommaselli
Salvatore, Italian physician, 1834–1906. See T. disease.
tomogram
A radiograph obtained by tomography. [G. tomos, a cutting (section) + gramma, a writing]
tomograph
The radiographic equipment used in tomography. [G. tomos, a cutting (section), + grapho, to write]
tomography
Making of a radiographic image of a selected plane by means of reciprocal linear or curved motion of the x-ray tube and film cassette; images of all other planes are blurred ...
Tomography, computerized
Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The computerized tomography (CT) scan can ...
Tomography, computerized axial
Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) ...
tomolevel
Obsolete term for the level at which tomography is performed.
tomomania
An irrational desire to use operative procedures by a doctor or a patient. [G. tomos, cutting, + mania, frenzy]
tonaphasia
Loss, through cerebral lesion, of the ability to remember tunes. [G. tonos, tone, + a- priv. + phasis, speech]
tone
1. A musical sound. 2. The character of the voice expressing an emotion. 3. The tension present in resting muscles. 4. Firmness of the tissues; normal functioning of all the ...
toner
A solution used in toning.
Tongue
The tongue is a strong muscle anchored to the floor of the mouth. It is covered by the lingual membrane which has special areas to detect tastes. The tongue is composed of ...
Tongue tie
A minor congenital anomaly (birth defect) in which the flap of mucous membrane under the tongue (known as the frenum) is too short and limits the normal mobility of the tongue. ...
tongue-tie
SYN: ankyloglossia.
tonic
1. In a state of continuous unremitting action; denoting especially a prolonged muscular contraction. 2. Invigorating; increasing physical or mental tone or strength. 3. A ...
tonicity
1. A state of normal tension of the tissues by virtue of which the parts are kept in shape, alert, and ready to function in response to a suitable stimulus. In the case of ...
tonicoclonic
Both tonic and clonic, referring to repeated muscular contractions. SYN: tonoclonic.
tonin
An enzyme converting angiotensin I to angiotensin II, thus similar to or identical with angiotensin-converting enzyme.
toning
The replacing of a silver deposit with one of gold in an impregnated histologic section, by treatment with a solution of gold chloride.
tonitrophobia
SYN: brontophobia. [L. tonitrus, thunder, + G. phobos, fear]
tono-
Tone, tension, pressure. [G. tonos]
tonoclonic
SYN: tonicoclonic.
tonofibril
One of a system of fibers found in the cytoplasm of epithelial cells. See cytoskeleton, tonofilament. SYN: epitheliofibril, tenofibril.
tonofilament
A structural cytoplasmic protein, of a class known as intermediate filaments, bundles of which together form a tonofibril; a t. is made up of a variable number of related ...
tonograph
A recording tonometer. [ tono- + G. grapho, to write]
tonography
Continuous measurement of intraocular pressure by means of a recording tonometer, in order to determine the facility of aqueous outflow.
tonometer
1. An instrument for determining pressure or tension, especially an instrument for determining ocular tension. 2. A vessel for equilibrating a liquid ( e.g., blood) with a gas, ...
Tonometry
A standard eye test that determines the fluid pressure inside the eye. Increased pressure is a possible sign of glaucoma, a common and potentially very serious eye problem if not ...
tonophant
An instrument for visualizing sound waves. [ tono- + G. phaino, to appear]
tonoplast
An intracellular structure or vacuole. [ tono- + G. plastos, formed]
tonoscillograph
An instrument that produces graphic records of arterial and capillary pressures as well as of individual pulse characters. [ tono- + L. oscillo, to swing, + G. grapho, to write]
tonotopic
Denoting a spatial arrangement of structures that subserve various frequencies, as in the auditory pathway. [ tono- + G. topos, place]
tonotropic
Denoting the shortening of the resting length of a muscle. [G. tonikos, tonos, tone, + tropos, a turning]
tonsil
1. Intraepithelial collection of lymphocytes forming a lymphoepithelial ring in the pharynx. 2. SYN: palatine t.. [L. tonsilla, a stake, in pl. the tonsils] - cerebellar t. ...
Tonsil stone
A tiny stone (calculus) in the tonsils. These stones, called tonsilloliths, are found within little pockets (crypts) in the tonsils that typically form in chronic recurrent ...
tonsilla
SYN: palatine tonsil. [L. (see tonsil)] - t. adenoidea SYN: pharyngeal tonsil. - t. cerebelli [TA] SYN: tonsil of cerebellum. - t. intestinalis aggregated lymphoid nodules ...
tonsillar, tonsillary
Relating to a tonsil, especially the palatine tonsil. SYN: amygdaline (3).
Tonsillectomy
The surgical removal of both tonsils. A tonsillectomy may be performed in cases of recurrent tonsillitis, or treat sleep apnea and some speech disorders. * * * Removal of the ...
Tonsillitis
Inflammation of the of a tonsil, typically as a result of infection by either a virus or bacteria. * * * Inflammation of a tonsil, especially of the palatine tonsil. [ tonsil ...
tonsillo-
Tonsil. [L. tonsilla]
Tonsillolith
A tiny stone (calculus) in the tonsils. Also referred to as a tonsillith. These stones, called tonsilloliths, are found within little pockets (crypts) in the tonsils that ...
tonsillopathy
Disease of the tonsil. [ tonsillo- + G. pathos, suffering]
tonsillotome
An instrument, sometimes modelled after a guillotine, for use in tonsillectomy. [ tonsillo- + G. tomos, cutting]
tonsillotomy
The cutting away of a portion or all of a hypertrophied faucial tonsil. [ tonsillo- + G. tome, incision]
tonsilolith
SYN: tonsillolith.
Tonsils
: Small masses of lymphoid tissue at the back of the throat, on either side of the throat.
tonus
SYN: tonicity (1). [L., fr. G. tonos] - baseline t. intrauterine pressure between contractions during labor. - myogenic t. contraction of a muscle caused by intrinsic ...
Tooth
The structures within the mouth that allow for biting and chewing. Teeth have different shapes, depending on their purpose. The sharp canine and frontal teeth allow for biting, ...

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