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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

t8 cell
A type of immune cells, T8 cells close down the immune response after it has destroyed invading organisms. T8 cells are sensitive to high concentrations of circulating lymphokine hormones and release their own lymphokines after an immune response has achieved its goal, signalling all other participants to cease their attack. Some memory B-cells rem …

Ta
Symbol for tantalum. ... (05 Mar 2000) ...

TAB vaccine
Synonym for typhoid-paratyphoid A and B vaccine ... A suspension of killed typhoid and paratyphoid A and B bacilli. ... See: typhoid vaccine. ... Synonym: TAB vaccine. ... (05 Mar 2000) ...

tabanid
Common name for flies of the family Tabanidae. ... Origin: L. Tabanus, gadfly ... (05 Mar 2000) ...

Tabanidae
A family of bloodsucking flies that includes the genera Tabanus (horsefly) and Chrysops (deerfly and mango fly), which are involved in transmission of several blood-borne parasites. ... Origin: L. Tabanus, gadfly ... (05 Mar 2000) ...

tabardillo
Mexican term for typhus. ... Origin: Sp., fr. L.L. Tabardilii, pustules ... (05 Mar 2000) ...

tabatiere anatomique
Synonym: anatomical snuffbox. ... Origin: Fr. Snuffbox ... (05 Mar 2000) ...

tabby
Origin: F. Tabis (cf. It. Tabi, Sp. & Pg. Tabi, LL. Attabi), fr. Ar. 'attabi, properly the name of a quarter of Bagdad where it was made, the quarter being named from the prince Attab, great grandson of Omeyya. Cf. Tobine. ... 1. A kind of waved silk, usually called watered silk, manufactured like taffeta, but thicker and stronger. The watering …

tabby cat striation
Synonym for tigroid striation ... Linear whitish or yellowish markings on the fatty degenerated heart muscle. ... Synonym: tabby cat striation. ... (05 Mar 2000) ...

tabella
A medicated tablet or lozenge. ... Origin: L. Dim. Of tabula, tablet ... (05 Mar 2000) ...

tabernacle
1. A slightly built or temporary habitation; especially, a tent. 'Dwelling in tabernacles with Isaac and Jacob.' (Heb. Xi. 9) 'Orange trees planted in the ground, and secured in winter with a wooden tabernacle and stoves.' (Evelyn) ... 2. A portable structure of wooden framework covered with curtains, which was carried through the wilderness in the …

tabes
<medicine> Progressive emaciation of the body, accompained with hectic fever, with no well-marked logical symptoms. Tabes dorsalis [NL, tabes of the back], locomotor ataxia; sometimes called simply tabes. Tabes mesenterica [NL, mesenteric tabes], a wasting disease of childhood characterised by chronic inflammation of the lymphatic glands of t …

tabes dorsalis
A condition that results from the destruction of the dorsal columns in the spinal cord, normally responsible for position sense. Loss of position sense causes severe gait and leg ataxia (balance and motor control problems). Tabes dorsalis can be the result of spinal cord injury or infection (syphilis). Results in a staggering wide-based gait, postu …

tabes ergotica
Ataxia, amyotrophy, and neuralgic pain seen in ergot intoxication. ... Tabes infantum, tabes in infants with congenital syphilis. ... Tabes mesenterica, tuberculosis of the mesenteric and retroperitoneal lymph nodes. ... (05 Mar 2000) ...

tabes spasmodica
Synonym for spastic diplegia ... A type of cerebral palsy in which there is bilateral spasticity, with the lower extremities more severely affected. ... Compare: flaccid paralysis. ... Synonym: Erb-Charcot disease, infantile diplegia, Little's disease, spastic spinal paralysis, tabes spasmodica. ... (05 Mar 2000) ...

tabes spinalis
See Tabes dorsalis. ... (12 Dec 1998) ...

tabescence
The state of progressive wasting away. ... (05 Mar 2000) ...

tabescent
Characteristic of tabes. ... Origin: L. Tabesco, to waste away, fr. Tabes, a wasting away ... (05 Mar 2000) ...

tabetic arthropathy
A neuropathic arthropathy that occurs with tabes dorsalis (tabetic neurosyphilis). ... See: neuropathic joint. ... Synonym: Charcot's joint. ... (05 Mar 2000) ...

tabetic crisis
Synonym for crisis ... A sudden paroxysmal intensification of symptoms in the course of a disease. ... Origin: L., Gr. Krisis ... (18 Nov 1997) ...

tabetic cuirass
An analgesic or hypalgesic zone in the proximal thoracic region, found in tabetic neurosyphilis. ... Synonym: analgesic cuirass, Hitzig's girdle. ... (05 Mar 2000) ...

tabetic dissociation
Loss of proprioceptive sensation with retained pain and temperature sensation due to involvement of the posterior columns of the spinal cord. ... (05 Mar 2000) ...

tabetic neurosyphilis
See Tabes dorsalis. ... (12 Dec 1998) ...

tabetiform
Resembling tabes, especially tabes dorsalis. ... Origin: irreg. Formed fr. L. Tabes, a wasting, + forma, form ... (05 Mar 2000) ...

tablature
1. A painting on a wall or ceiling; a single piece comprehended in one view, and formed according to one design; hence, a picture in general. ... 2. An ancient mode of indicating musical sounds by letters and other signs instead of by notes. 'The chimes of bells are so rarely managed that I went up to that of Sir Nicholas, where I found who played a …

table
1. A smooth, flat surface, like the side of a board; a thin, flat, smooth piece of anything; a slab. 'A bagnio paved with fair tables of marble.' (Sandys) ... 2. A thin, flat piece of wood, stone, metal, or other material, on which anything is cut, traced, written, or painted; a tablet; pl. A memorandum book. 'The names . . . Written on his tables.' …

table salt
Synonym for sodium chloride ... <chemical> Table salt, NaCL. ... (09 Oct 1997) ...

tablespoon
A large spoon, used as a measure of the dose of a medicine, equivalent to about 4 fluidrams or 1/2 fluidounce or 15 ml. ... (05 Mar 2000) ...

tablet
1. A small table or flat surface. ... 2. A flat piece of any material on which to write, paint, draw, or engrave; also, such a piece containing an inscription or a picture. ... 3. Hence, a small picture; a miniature. ... 4. A kind of pocket memorandum book. ... 5. A flattish cake or piece; as, tablets of arsenic were formerly worn as a preservative aga …

tablet triturate
A small, usually cylindrical, molded or compressed disk of varying size, containing a diluent usually consisting of dextrose (glucose) or of a mixture of lactose and powdered sucrose and a moistening agent or excipient, such as dilute alcohol. ... (05 Mar 2000) ...

tablets
Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. ... (12 Dec 1998) ...

tablets, enteric-coated
Tablets coated with material that delays release of the medication until after they leave the stomach. ... (12 Dec 1998) ...

taboo
Any negative tradition or behaviour that is generally regarded as harmful to social welfare and forbidden within a cultural or social group. ... (12 Dec 1998) ...

taboparesis
A condition in which the symptoms of tabes dorsalis and general paresis are associated. ... (05 Mar 2000) ...

tabula
Origin: L. ... 1. A table; a tablet. ... 2. <zoology> One of the transverse plants found in the calicles of certain corals and hydroids. Tabula rasa [L], a smoothed tablet; hence, figuratively, the mind in its earliest state, before receiving impressions from without; a term used by Hobbes, Locke, and others, in maintaining a theory opposed to …

tabular
Having the form of, or pertaining to, a table (in any of the uses of the word). Specifically: ... Having a flat surface; as, a tabular rock. ... Formed into a succession of flakes; laminated. 'Nodules . . . That are tabular and plated.' (Woodward) ... Set in squares. ... Arranged in a schedule; as, tabular statistics. ... Derived from, or computed by, t …

tabule
Synonym: tablet. ... Origin: L. Tabula ... (05 Mar 2000) ...

tabun
Dimethylphosphoramidocyanidic acid, ethyl ester;an extremely potent cholinesterase inhibitor; the lethal dose for man is believed to be as low as 0.01 mg per kg; median lethal dosage (respiratory) is about 40 mg. Min/m3 for resting men. ... (05 Mar 2000) ...

Tac antigen
An antigenic determinant of the human interleukin 2 receptor that is identified by a murine monoclonal antibody, anti-Tac. Binding of this antigen prevents the proliferation of T-cells, which is normally stimulated by binding interleukin-2. ... (05 Mar 2000) ...

tacamahaca
1. A bitter balsamic resin obtained from tropical American trees of the genus Elaphrium (E. Tomentosum and E. Tacamahaca), and also from East Indian trees of the genus Calophyllum; also, the resinous exhudation of the balsam poplar. ... 2. <botany> Any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of G …

Tacaribe complex
<virology> Group of 8 Arenaviridae isolated in s.America from bats. ... (18 Nov 1997) ...

Tacaribe complex of viruses
A group of arenaviruses that includes the antigenically interrelated arboviruses Amapari, Junin, Latino, Machupo, Parana, Pichinde, Tacaribe, and Tamiami. ... (05 Mar 2000) ...

tacaribe complex viruses
One of two groups of viruses in the arenavirus genus and considered part of the new world complex. It includes junin virus, pichinde virus, amapari virus, and machupo virus among others. They are the cause of human haemorrhagic fevers mostly in central and south america. ... (12 Dec 1998) ...

tacaribe virus
<virology> Arenavirus isolated from s.American bat. ... (18 Nov 1997) ...

tache
A circumscribed discoloration of the skin or mucous membrane, such as a macule or freckle. ... Origin: Fr. Spot ... (05 Mar 2000) ...

tache blanche
Synonym for macula albida ... Gray-white or white, rounded or irregularly shaped, slightly opaque patches or spots that are sometimes observed postmortem in the epicardium, especially in middle-aged or older persons; they result from fibrous thickening, and sometimes hyalinization, of the epicardium; similar lesions may also occur in the visceral la …

tache bleuatre
Synonym for macula cerulea ... A bluish stain on the skin caused by the bites of fleas or lice, especially pediculosis pubis. ... Synonym: blue spot, tache bleuatre. ... (05 Mar 2000) ...

tache cerebrale
Synonym for meningitic streak ... A line of redness resulting from drawing a point across the skin, especially notable in cases of meningitis. ... Synonym: tache cerebrale, tache meningeale, Trousseau's spot. ... (05 Mar 2000) ...

tache laiteuse
Synonym for milk spots ... White plaques of hyalinised fibrous tissue situated in the epicardium overlying the right ventricle of the heart where it is not covered by lung. ... Synonym: soldier's patches. ... White macroscopic areas in the omentum, due to accumulation of macrophages and lymphocytes. ... Synonym: tache laiteuse. ... (05 Mar 2000) ...

tache meningeale
Synonym for meningitic streak ... A line of redness resulting from drawing a point across the skin, especially notable in cases of meningitis. ... Synonym: tache cerebrale, tache meningeale, Trousseau's spot. ... (05 Mar 2000) ...

tache noire
Black spot (in French), a small ulcer covered with a black crust at the site of a tick bite, characteristic of several tick-borne rickettsial diseases. ... (12 Dec 1998) ...

tachetic
Marked by bluish or brownish spots. ... Origin: Fr. Tache, spot ... (05 Mar 2000) ...

tachistesthesia
An obsolete term for recognition of light flicker. ... Origin: G. Tachistos, very rapid, from tachys, rapid, + aesthesis, perception ... (05 Mar 2000) ...

tachistoscope
<instrument> An instrument to determine the shortest time an object must be exposed in order to be perceived. ... Origin: G. Tachistos, very rapid, fr. Tachys, rapid, + skopeo, to view ... (05 Mar 2000) ...

tachogram
Record made by a tachometer. ... Origin: G. Tachos, speed, + gramma, mark ... (05 Mar 2000) ...

tachograph
A tachometer designed to provide a continuous record of speed or rate. ... Origin: G. Tachos, speed, + grapho, to write ... (05 Mar 2000) ...

tachography
The recording of speed or rate. ... Origin: G. Tachos, speed, + grapho, to write ... (05 Mar 2000) ...

tachometer
An instrument for measuring the velocity, or indicating changes in the velocity, of a moving body or substance. Specifically: ... An instrument for measuring the velocity of running water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded by clockwork. ... An instrum …

tachy-
Rapid. ... Origin: G. Tachys, quick ... (05 Mar 2000) ...

tachyarrhythmia
<cardiology> A tachycardia associated with an irregularity in the normal heart rhythm. ... Origin: Gr. Rhythmos = rhythm ... (18 Nov 1997) ...

tachyauxesis
Type of growth in which a part grows more rapidly than the whole. ... Origin: tachy-+ G. Auxo, to increase ... (05 Mar 2000) ...

tachybradycardia syndrome
Synonym for bradytachycardia syndrome ... <syndrome> Alternate rapid and slow cardiac rates that may represent any rhythm disturbances in any combination usually related to sinus node disease. ... Synonym: tachybradycardia syndrome. ... (05 Mar 2000) ...

tachycardia
<clinical sign> The excessive rapidity in the action of the heart, the term is usually applied to a heart rate above 100 per minute and may be qualified as atrial, junctional (nodal) or ventricular and as paroxysmal. ... Origin: Gr. Kardia = heart ... (18 Nov 1997) ...

tachycardia en salves
Short runs of paroxysmal tachycardia of the Gallavardin type. ... Compare: Gallavardin's phenomenon. ... Origin: Fr. Tachycardia in salvos ... (05 Mar 2000) ...

tachycardia exophthalmica
Rapid heart action occurring as one of the symptoms of exophthalmic goiter. ... (05 Mar 2000) ...

tachycardia window
In paroxysmal tachycardia of the reentry type, the interval of time (the window) between the earliest and latest premature activation that can excite the paroxysm. ... (05 Mar 2000) ...

tachycardia-bradycardia syndrome
<syndrome> A disorder consisting of abnormalities of supraventricular impulse generation and conduction which produce a wide variety of intermittent rapid and slow supraventricular arrhythmias. ... Common symptoms include palpitations, faintness and fainting. ... Diagnosis is generally by 24 hour cardiac monitoring. A permanent pacemaker is ind …

tachycardia, ectopic atrial
A tachycardia originating in the atrial myocardium and characterised by rates between 135 and 175 beats per minute. ... (12 Dec 1998) ...

tachycardia, ectopic junctional
A tachycardia arising in the conduction tissues surrounding the atrioventricular node. It usually occurs during myocardial infarction, after heart surgery, or in digitalis intoxication. The rate may range from 140 to 250 beats per minute. ... (12 Dec 1998) ...

tachycardia, paroxysmal
Condition marked by attacks of rapid action of the heart having sudden onset and cessation. ... (12 Dec 1998) ...

tachycardia, paroxysmal atrial
Bouts of rapid, regular heart beating originating in the atrium (upper chamber of the heart). Often due to abnormalities in the av node relay station that lead to rapid firing of electrical impulses from the atrium which bypass the av node under certain conditions. These conditions include alcohol excess, stress, caffeine, overactive thyroid or exc …

tachycardia, sinus
Fast heartbeat (tachycardia) occurring because of rapid firing by the sa node, the natural pacemaker of the heart. Electrical signals initiated in the sa node are transmitted to the atria and the ventricles to stimulate heart muscle contractions heartbeats. Sinus tachycardia is usually a rapid contraction of a normal heart in response to a conditio …

tachycardia, supraventricular
A generic expression for any tachycardia that originates above the bundle of his. ... (12 Dec 1998) ...

tachycardia, ventricular
An abnormal heart rhythm that is rapid, regular and originates from an area of the ventricle, the lower chamber of the heart. Ventricular tachycardias are life threatening arrhythmias most commonly associated with heart attacks or scarring of the heart muscle from previous heart attack. ... (12 Dec 1998) ...

tachycardiac
Relating to or suffering from excessively rapid action of the heart. ... (05 Mar 2000) ...

tachycardic
Relating to rapid heart rate. ... (05 Mar 2000) ...

tachycrotic
Relating to, causing, or characterised by a rapid pulse. ... Origin: tachy-+ G. Krotos, a striking ... (05 Mar 2000) ...

tachykinin
Any member of a group of polypeptides, widely scattered in vertebrate and invertebrate tissues, that have in common four of the five terminal amino acids: Phe-Xaa-Gly-Leu-Met-NH2; pharmacologically, they all cause hypotension in mammals, contraction of gut and bladder smooth muscle, and secretion of saliva. ... Origin: G. Tachys, swift, + kineo, to …

tachykinins
A family of biologically active peptides sharing a common conserved c-terminal sequence, -phe-x-gly-leu-met-nh2, where x is either an aromatic or a branched aliphatic amino acid. Members of this family have been found in mammals, amphibians, and mollusks. Tachykinins have diverse pharmacological actions in the central nervous system and the cardiov …

tachylalia
Rarely used term for tachylogia. ... Origin: tachy-+ G. Lalia, talking ... (05 Mar 2000) ...

tachylogia
Rarely used term for rapid or voluble speech. ... Synonym: tachyphasia, tachyphemia, tachyphrasia. ... Origin: tachy-+ G. Logos, word ... (05 Mar 2000) ...

tachypacing
Rapid pacing of the heart by an artificial electronic pacemaker operating faster than the basic cardiac rate. ... (05 Mar 2000) ...

tachyphagia
Rarely used term for rapid eating; bolting of food. ... Origin: tachy-+ G. Phago, to eat ... (05 Mar 2000) ...

tachyphasia
Synonym: tachylogia. ... Origin: tachy-+ G. Phasis, speaking ... (05 Mar 2000) ...

tachyphemia
Synonym: tachylogia. ... Origin: tachy-+ G. Pheme, speech ... (05 Mar 2000) ...

tachyphrasia
Synonym: tachylogia. ... Origin: tachy-+ G. Phrasis, speaking ... (05 Mar 2000) ...

tachyphylaxis
1. <immunology> The rapid immunisation against the effect of toxic doses of an extract or serum by previous injection of small doses. ... 2. <pharmacology> The rapidly decreasing response to a drug or physiologically active agent after administration of a few doses. ... Origin: Gr. Phylaxis = protection ... (16 Dec 1997) ...

tachypnea
An abnormally rapid (usually shallow) respiratory rate. The normal resting adult respiratory rate is 12-20 breaths/minute. ... (27 Sep 1997) ...

tachyrhythmia
Synonym: tachycardia. ... Origin: tachy-+ G. Rhythmos, rhythm ... (05 Mar 2000) ...

tachysterol
Sterol(s) formed by ultraviolet irradiation of any 5,7-diene-3b-sterol, which breaks the 9,10 bond, but usually from either or both of ergosterol and lumisterol to produce tachysterol2 (ertacalciol, (6E,22E)-9,10-secoergosta-5(10),6,8,22-tetraen-3b-ol) and from 7-dehydrocholesterol to produce tachysterol3 (tacalciol,(6E,3S)-9,10-secocholesta-5(10), …

tachysystole
Synonym: tachycardia. ... Origin: tachy-+ G. Systole, contracting ... (05 Mar 2000) ...

tachyzoite
A rapidly multiplying stage in the development of the tissue phase of certain coccidial infections, as in Toxoplasma gondii development in acute infections of toxoplasmosis. ... Origin: tachy-+ G. Zoon, animal ... (05 Mar 2000) ...

tackle
1. Apparatus for raising or lowering heavy weights, consisting of a rope and pulley blocks; sometimes, the rope and attachments, as distinct from the block. ... 2. Any instruments of action; an apparatus by which an object is moved or operated; gear; as, fishing tackle, hunting tackle; formerly, specifically, weapons. 'She to her tackle fell.' ... In …

tacrine
<chemical> A cholinesterase inhibitor that crosses the blood-brain barrier. Tacrine has been used to counter the effects of muscle relaxants, as a respiratory stimulant, and in the treatment of alzheimer's disease and other central nervous system disorders. ... Pharmacological action: cholinesterase inhibitor, nootropic agents, parasympathomim …

tacrolimus
<chemical> A macrolide isolated from the culture broth of a strain of streptomyces tsukubaensis that has strong immunosuppressive activity in vivo and prevents the activation of T-lymphocytes in response to antigenic or mitogenic stimulation in vitro. ... Pharmacological action: immunosuppressive agents. ... Chemical name: 15,19-Epoxy-3H-pyrido …

tactile
Of or pertaining to the organs, or the sense, of touch; perceiving, or perceptible, by the touch; capable of being touched; as, tactile corpuscles; tactile sensations. 'Tactile sweets.' . 'Tactile qualities.' . ... <physiology> Tactile sense, the sense of touch, or pressure sense. See Touch. 'The delicacy of the tactile sense varies on differe …

tactile agnosia
The inability to recognise objects by touch, in the presence of intact cutaneous and proprioceptive hand sensation; caused by lesion in the contralateral parietal lobe. ... Synonym: astereognosis, stereoagnosis, stereoanesthesia. ... (05 Mar 2000) ...

tactile anaesthesia
Loss or impairment of the sense of touch. ... (05 Mar 2000) ...

tactile cell
One of the epithelioid cell's of a corpusculum tactus. ... Synonym: touch cell. ... (05 Mar 2000) ...

tactile corpuscle
One of numerous oval bodies found in the papillae of the skin, especially those of the fingers and toes; they consist of a connective tissue capsule in which the axon fibrils terminate around and between a pile of wedge-shaped epithelioid cells. ... Synonym: corpusculum tactus, Meissner's corpuscle, oval corpuscle, touch corpuscle. ... (05 Mar 2000)< …