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

triketohydrindene reaction
Synonym for ninhydrin reaction ... <technique> A technique for detecting amino acids and proteins by heating a material with ninhydrin, if amino molecules are present, there is a colour reaction. ... (09 Oct 1997) ...

triketopurine
Synonym for uric acid ... <biochemistry> The final product of nitrogenous excretion in animals that require to conserve water, such as terrestrial insects or have limited storage space, such as birds and their eggs. Uric acid has very low water solubility and crystals may be deposited in, for example: butterflies wings to impart irridescence.< …

trilabe
A three-pronged forceps for removal of foreign bodies from the bladder. ... Origin: tri-+ G. Labe, a handle, hold ... (05 Mar 2000) ...

trilaminar
Having three laminae. ... (05 Mar 2000) ...

trilaminar blastoderm
The blastoderm after all three of the primary germ layers have been established. ... (05 Mar 2000) ...

trilobate
Trilobed ... Having three lobes. ... (05 Mar 2000) ...

trilobite
<paleontology> Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment. ... Origin: Cf. F. Trilobite. See Trilobate. ... Source: Websters Dicti …

trilogy
A triad of related entities. ... Origin: G. Trilogia, fr. Tri-+ logos, study, discourse ... Trilogy of Fallot, a set of congenital defects including pulmonic stenosis, atrial septal defect, and right ventricular hypertrophy. ... Synonym: Fallot's triad. ... (05 Mar 2000) ...

trilogy of fallot
Combination of pulmonary valve stenosis and atrial septal defect with right ventricular hypertrophy. ... (12 Dec 1998) ...

trilostane
4a,5-Epoxy-3,17b-dihydroxy-5a-androst-2-ene-2-carbonitrile;an adrenal steroid inhibitor used for amelioration of adrenal hyperfunction in Cushing's syndrome. ... (05 Mar 2000) ...

trim
1. To make trim; to put in due order for any purpose; to make right, neat, or pleasing; to adjust. 'The hermit trimmed his little fire.' (Goldsmith) ... 2. To dress; to decorate; to adorn; to invest; to embellish; as, to trim a hat. 'A rotten building newly trimmed over.' (Milton) 'I was trimmed in Julia's gown.' (Shak) ... 3. To make ready or right …

trimalleolar fracture
A fracture through both malleoli and the posterior process of the tibia. ... (05 Mar 2000) ...

trimastigote
Having three flagella, as observed in certain protozoan organisms. ... Origin: tri-+ G. Mastix, whip ... (05 Mar 2000) ...

trimebutine
<chemical> Beta-ethyl-beta-dimethylaminophenylethyl-3,4,5-trimethoxybenzoate. Proposed spasmolytic with possible local anaesthetic action used in gastrointestinal disorders. ... Pharmacological action: gastrointestinal agents, parasympatholytics. ... Chemical name: Benzoic acid, 3,4,5-trimethoxy-, 2-(dimethylamino)-2-phenylbutyl ester ... (12 De …

trimecaine
<chemical> Acetanilide derivative used as a local anaesthetic. ... Pharmacological action: anaesthetics, local. ... Chemical name: Acetamide, 2-(diethylamino)-N-(2,4,6-trimethylphenyl)- ... (12 Dec 1998) ...

trimedoxime
<chemical> 1,1'-trimethylenebis(4-formylpyridiniumdioxime)dibromide. Cholinesterase reactivator used as an antidote in alkyl phosphate poisoning. ... Pharmacological action: antidotes, cholinesterase reactivators. ... Chemical name: Pyridinium, 1,1'-(1,3-propanediyl)bis(4-((hydroxyimino)methyl)-, dibromide ... (12 Dec 1998) ...

trimeprazine
<chemical> A phenothiazine derivative that is effective as an antipruritic. ... Pharmacological action: antipruritics. ... Chemical name: 10H-Phenothiazine-10-propanamine, N,N,beta-trimethyl- ... (12 Dec 1998) ...

trimeprazine tartrate
10-[3-(Dimethylamino)-2-methylpropyl]phenothiazine tartrate;a phenothiazine compound related chemically and pharmacologically to promazine but with a more pronounced histamine-antagonizing action; used for the symptomatic relief of pruritus. ... (05 Mar 2000) ...

trimer
A compound, complex, or structure made up of three components. ... (05 Mar 2000) ...

trimeresurus
A genus of snakes of the family viperidae. About 30 species are currently recognised, found in southeast asia and adjacent island chains. The okinawa habu frequently enters dwellings in search of rats and mice; the chinese habu is often found in suburban and agricultural areas. They are quite irritable. (moore: poisonous snakes of the world, 1980, …

trimerous
<botany> Of a flower, having three segments in each perianth whorl and usually in each whorl of stamens as well. ... (09 Oct 1997) ...

trimester
A period of 3 months; one-third of the length of a pregnancy. ... Origin: L. Trimestris, of three-month duration ... (05 Mar 2000) ...

trimetaphan camsylate
Synonym for trimethaphan camsylate ... D-1,3-dibenzyldecahydro-2-oxoimidazo[c]thieno[1,2-a]thiolium camphorsulfonate;a ganglionic blocking agent that produces vasodilation of brief duration; used in surgery, particularly neurosurgery, to produce a relatively bloodless operative field (controlled hypotension). ... Synonym: trimetaphan camsylate. ... (0 …

trimetazidine
<chemical> 1-(2,3,4-trimethoxybenzyl)piperazine. A vasodilator used in angina of effort or ischemic heart disease. ... Pharmacological action: vasodilator agents. ... Chemical name: Piperazine, 1-((2,3,4-trimethoxyphenyl)methyl)- ... (12 Dec 1998) ...

trimethadione
<chemical> An anticonvulsant effective in absence seizures, but generally reserved for refractory cases because of its toxicity. ... Pharmacological action: anticonvulsants. ... Chemical name: 2,4-Oxazolidinedione, 3,5,5-trimethyl- ... (12 Dec 1998) ...

trimethaphan
<chemical> A nicotinic antagonist that has been used as a ganglionic blocker in hypertension, as an adjunct to anaesthesia, and to induce hypotension during surgery. ... Pharmacological action: anaesthesia adjuvants, antihypertensive agents, ganglionic blockers, nicotinic antagonists. ... Chemical name: Thieno(1',2':1,2)thieno(3,4-d)imidazol-5- …

trimethaphan camsylate
D-1,3-dibenzyldecahydro-2-oxoimidazo[c]thieno[1,2-a]thiolium camphorsulfonate;a ganglionic blocking agent that produces vasodilation of brief duration; used in surgery, particularly neurosurgery, to produce a relatively bloodless operative field (controlled hypotension). ... Synonym: trimetaphan camsylate. ... (05 Mar 2000) ...

trimethidium methosulfate
(+)-[N-Methyl-N-(gamma-trimethylammoniumpropyl)]-1,8,8-t rimethyl-3-azabicyclo[3.2.1]octane dimethosulfate; a quaternary ammonium compound that blocks ganglionic transmission at sympathetic and parasympathetic ganglia; used in the treatment of severe hypertension. ... (05 Mar 2000) ...

trimethobenzamide hydrochloride
N-[(2-Dimethylaminoethoxy)benzyl]-3,4,5-trimethoxybenzamide hydrochloride;an antiemetic. ... (05 Mar 2000) ...

trimethoprim
<drug> A drug that inhibits the reduction of dihydrofolate to tetrahydrofolate (a later step than that inhibited by sulphonamides). ... Selective for some bacterial dihydrofolate reductases and often used in conjunction with sulphonamides. ... (19 Jan 1998) ...

trimethoprim resistance
Nonsusceptibility of a bacterium to the action of trimethoprim. ... (12 Dec 1998) ...

trimethoprim-sulfamethoxazole
A drug combination consisting of a dihydrofolate reductase inhibitor (trimethoprim) and a sulfonamide antibacterial drug (sulfamethoxazole). The drug combination is synergistic as the drugs interfere with two successive steps in the formation/utilization of folic acid by microorganisms. Used to treat many infectious diseases. ... (05 Mar 2000) ...

trimethylaminuria
An inborn error of metabolism associated with an offensive body odour, the smell of rotting fish, due to the excessive excretion of tma in urine, sweat, and breath. Persons with tma may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays co …

trimethylcarbinol
Tertiary butyl alcohol. ... See: butyl alcohol. ... (05 Mar 2000) ...

trimethylglycine
Synonym for betaine ... <chemical> A derivative of glycine characterised by high water solubility. Can function as an osmotic agent in plant tissues. ... See: biogenic amines. ... (18 Nov 1997) ...

trimethylglycocoll anhydride
Synonym for betaine ... <chemical> A derivative of glycine characterised by high water solubility. Can function as an osmotic agent in plant tissues. ... See: biogenic amines. ... (18 Nov 1997) ...

trimethylomelamine
(s-Triazine-2,4,6-triyltriimino)trimethanol;an antineoplastic agent. ... (05 Mar 2000) ...

trimethylsilyl compounds
Organic silicon derivatives used to characterise hydroxysteroids, nucleosides, and related compounds. Trimethylsilyl esters of amino acids are used in peptide synthesis. ... (12 Dec 1998) ...

trimethyltin compounds
Organic compounds composed of tin and three methyl groups. Affect mitochondrial metabolism and inhibit oxidative phosphorylation by acting directly on the energy conserving processes. ... (12 Dec 1998) ...

trimetozine
4-(3,4,5-Trimethoxybenzoyl)morpholine;an antianxiety agent. ... (05 Mar 2000) ...

trimetrexate
<drug> An antibiotic approved as an alternative treatment for moderate-to-severe PCP. ... Trimetrexate causes severe bone marrow, liver, kidney and gastrointestinal toxicities. It must be administered along with leucovorin (folinic acid) to ameliorate these adverse effects. ... (19 Jan 1998) ...

trimipramine
<drug> This tricyclic drug is used to treat depression. ... (09 Oct 1997) ...

trimorphism
1. <chemistry> The property of crystallizing in three forms fundamentally distinct, as is the case with titanium dioxide, which crystallizes in the forms of rutile, octahedrite, and brookite. See Pleomorphism. ... 2. <biology> The coexistence among individuals of the same species of three distinct forms, not connected, as a rule, by inte …

trinidad and tobago
An independent state in the lesser antilles in the west indies, north of venezuela, comprising the islands of trinidad and tobago. Its capital is port of spain. Both islands were discovered by columbus in 1498. The spanish, english, dutch, and french figure in their history over four centuries. Trinidad and tobago united in 1898 and were made part …

trinitrobenzenes
Benzene derivatives which are substituted with three nitro groups in any position. ... (12 Dec 1998) ...

trinitrobenzenesulfonic acid
<chemical> 2,4,6-trinitrobenzenesulfonic acid. A reagent that is used to neutralise peptide terminal amino groups. ... Chemical name: Benzenesulfonic acid, 2,4,6-trinitro- ... (12 Dec 1998) ...

trinitrocellulose
A constituent of soluble guncotton; used in the preparation of collodion and of pyroxylin. ... (05 Mar 2000) ...

trinitroglycerin
Synonym for nitroglycerin ... <chemistry> A liquid appearing like a heavy oil, colourless or yellowish, and consisting of a mixture of several glycerin salts of nitric acid, and hence more properly called glycerin nitrate. ... It is made by the action of nitric acid on glycerin in the presence of sulphuric acid. It is extremely unstable and ter …

trinitrotoluene
<chemical> Chemical name: Benzene, 2-methyl-1,3,5-trinitro- ... (12 Dec 1998) ...

trinitrotoluol
Synonym for trinitrotoluene ... <chemical> Chemical name: Benzene, 2-methyl-1,3,5-trinitro- ... (12 Dec 1998) ...

trinity
1. The union of three persons (the Father, the Son, and the Holy Ghost) in one Godhead, so that all the three are one God as to substance, but three persons as to individuality. ... 2. Any union of three in one; three units treated as one; a triad, as the Hindoo trinity, or Trimurti. ... 3. Any symbol of the Trinity employed in Christian art, especia …

trinomen
<zoology> The combination of a generic name, a specific name, and a subspecific name, that together constitute a scientific name subspecies. ... (09 Jan 1998) ...

trinucleotide
A combination of three adjacent nucleotides, free or in a polynucleotide or nucleic acid molecule; often used with specific reference to the unit (codon or anticodon) specifying a particular amino acid in expression of the genetic code. ... (05 Mar 2000) ...

trinucleotide repeat
<molecular biology> Repetitive part of a genome that may form part of the coding sequence of a gene. ... The length of such repeats is frequently polymorphic and unstably amplified repeats appear to be the major cause of such genetic diseases as Huntington disease, fragile X syndrome, spinobulbar muscular atrophy and myotonic dystrophy. ... (18 …

trinucleotide repeats
Microsatellite tandem repeats (microsatellite repeats) consisting of three nucleotides dispersed in the euchromatic arms of chromosomes. ... (12 Dec 1998) ...

triodobenzoic acid
<chemical> An inhibitor of basipetal auxin transport in plants. ... (18 Nov 1997) ...

triokinase
A phosphotransferase catalyzing the phosphorylation of d-glyceraldehyde by ATP to produce d-glyceraldehyde 3-phosphate and ADP; participates in a step in d-fructose metabolism. ... Synonym: triosekinase. ... (05 Mar 2000) ...

triol
A compound containing three hydroxyl groups; e.g., glycerol. ... (05 Mar 2000) ...

trionyx
<zoology> A genus of fresh water or river turtles which have the shell imperfectly developed and covered with a soft leathery skin. They are noted for their agility and rapacity. ... Synonym: soft tortoise, soft-shell tortoise, and mud turtle. ... The common American species (Trionyx, or Aspidonectus, ferox) becomes over a foot in length and is …

triophthalmos
Conjoined twins with fusion in the facial region such that the eyes on the joined sides have merged to form a single one; a variety of opodidymus. ... See: conjoined twins. ... Origin: tri-+ G. Ophthalmos, eye ... (05 Mar 2000) ...

triorchism
Condition of having three testes. ... (05 Mar 2000) ...

triorthocresyl phosphate
A triaryl phosphate; produces a delayed neurotoxicity. An infamous incident occurred when it appeared as an adulterant in Jamaica ginger and was responsible for thousands of cases of paralysis during the Prohibition era. ... (05 Mar 2000) ...

triose
<biochemistry> A simple sugar that has a three-carbon backbone. ... (09 Oct 1997) ...

triosekinase
Synonym for triokinase ... A phosphotransferase catalyzing the phosphorylation of d-glyceraldehyde by ATP to produce d-glyceraldehyde 3-phosphate and ADP; participates in a step in d-fructose metabolism. ... Synonym: triosekinase. ... (05 Mar 2000) ...

triosephosphate isomerase
<biochemistry, enzyme> An isomerizing enzyme that during glycolysis, catalyses the reversible interconversion of d-glyceraldehyde 3-phosphate to dihydroxyacetone phosphate and viceversa. A reaction of importance in glycolysis and gluconeogenesis. ... A deficiency in humans causes congenital nonspherocytic haemolytic anaemia and severe neurolog …

triotus
Diprosopus in which three ears are present. ... Origin: tri-+ G. Ous, ear ... (05 Mar 2000) ...

trioxsalen
<chemical> Pigmenting photosensitizing agent obtained from several plants, mainly psoralea corylifolia. It is administered either topically or orally in conjunction with ultraviolet light in the treatment of vitiligo. ... Pharmacological action: photosensitizing agents. ... Chemical name: 7H-Furo(3,2-g)(1)benzopyran-7-one, 2,5,9-trimethyl- ... ( …

trioxymethylene
Synonym for paraformaldehyde ... A polymer of formaldehyde, used as a disinfectant. ... Synonym: trioxymethylene. ... (05 Mar 2000) ...

trip
1. A quick, light step; a lively movement of the feet; a skip. 'His heart bounded as he sometimes could hear the trip of a light female step glide to or from the door.' (Sir W. Scott) ... 2. A brief or rapid journey; an excursion or jaunt. 'I took a trip to London on the death of the queen.' (Pope) ... 3. A false step; a stumble; a misstep; a loss of …

triparanol
<chemical> Antilipaemic agent with high ophthalmic toxicity. According to merck index, 11th ed, the compound was withdrawn from the market in 1962 because of its association with the formation of irreversible cataracts. ... Pharmacological action: antilipaemic agents. ... Chemical name: Benzeneethanol, 4-chloro-alpha-(4-(2-(diethylamino)ethoxy) …

tripe
1. The large stomach of ruminating animals, when prepared for food. 'How say you to a fat tripe finely broiled ?' (Shak) ... 2. The entrails; hence, humorously or in contempt, the belly; generally used in the plural. ... Origin: OE. Tripe, F. Tripe; of uncertain origin; cf. Sp. & Pg. Tripa, It. Trippa, OD. Tripe, W. Tripa, Armor. Stripen. ... Sour …

tripelennamine
<chemical> A histamine h1 antagonist with low sedative action but frequent gastrointestinal irritation. It is used to treat asthma, hay fever, urticaria, and rhinitis, and also in veterinary applications. Tripelennamine is administered by various routes, including topically. ... Pharmacological action: anti-allergic agents, histamine h1 antago …

tripelennamine hydrochloride
2-[Benzyl[2-(dimethylamino)ethyl]amino]pyridine monohydrochloride;an antihistamine. Also available, with the same actions, is tripelennamine hydrochloride citrate; it is less bitter than the hydrochloride salt, and is therefore used in elixir. ... (05 Mar 2000) ...

tripeptidases
A class of enzymes of different specificities that catalyses the hydrolysis of tripeptides, producing a dipeptide and an amino acid. ... (05 Mar 2000) ...

tripeptide
A compound containing three amino acids linked together by peptide bonds. ... (05 Mar 2000) ...

tripeptide aminopeptidase
<enzyme> Catalyses the hydrolysis of aminoacyl-dipeptide to yield an amino acid and dipeptide; cleaves exclusively unsubstituted tripeptides; formerly EC 3.4.1.3 ... Registry number: EC 3.4.11.4 ... Synonym: aminotripeptidase, leucylglycylglycine aminopeptidase ... (26 Jun 1999) ...

tripeptidyl aminopeptidase
<enzyme> Cleaves 11 tripeptides sequentially from the nh3 terminus of the phenylalanyl monomer of bovine gh ... Registry number: EC 3.4.- ... Synonym: tripeptidyl peptidase ... (26 Jun 1999) ...

triphalangia
Malformation in which three phalanges are present in the thumb or great toe. ... Origin: tri-+ phalanx ... (05 Mar 2000) ...

triphammer pulse
Synonym for water-hammer pulse ... <radiology> Corrigan's sign: increased pulse at wrist, aortic insufficiency, widened pulse pressure due to increased stroke volume, diastolic regurgitation ... (12 Dec 1998) ...

triphenylmethane dyes
A group of dye's that includes pararosanilin, as well as many others used in histology and cytology; employed as nuclear, cytoplasmic, and connective tissue stains; important in histochemistry as in the preparation of Schiff's reagent. ... (05 Mar 2000) ...

triphosphatase
Synonym for adenosine triphosphatase ... <enzyme> A group of enzymes which catalyze the hydrolysis of ATP coupled with another function such as transporting calcium across a membrane. These enzymes may be dependent on calcium, magnesium, anions, h+, or DNA. ... Chemical name: ATP phosphohydrolase ... Registry number: EC 3.6.1.3 ... (12 Dec 1998)< …

triphosphopyridine nucleotide
Former name for nicotinamide adenine dinucleotide phosphate. ... (05 Mar 2000) ...

triphylite
<chemical> A mineral of a grayish-green or bluish colour, consisting of the phosphates of iron, manganese, and lithia. ... A salmon-coloured or clove-brown variety containing but little iron is known as lithiophilite. ... Origin: Pref. Tri- + Gr. A family, class. So called in allusion to its containing three phosphates. ... Source: Websters Dict …

Tripier
Leon, French surgeon, 1842-1891. ... See: Tripier's amputation. ... (05 Mar 2000) ...

Tripier's amputation
A modification of Chopart's amputation, in that a part of the calcaneus is also removed. ... (05 Mar 2000) ...

tripinnate
<botany> Of leaves, pinnately divided three times. ... (09 Oct 1997) ...

triplant
See: triplant implant. ... (05 Mar 2000) ...

triplant implant
A combination of three pin implant's to form a single abutment to support or retain a dental prosthesis. ... (05 Mar 2000) ...

triple
1. Consisting of three united; multiplied by three; threefold; as, a triple knot; a triple tie. 'By thy triple shape as thou art seen.' (Dryden) ... 2. Three times repeated; treble. See Treble. ... 3. One of three; third. Triple crown, the crown, or tiara, of the pope. See Tiara. Triple-expansion steam engine, a compound steam engine in which the sam …

triple bond
A covalent bond resulting from the sharing of three pairs of electrons; e.g., HC&equiv;CH (acetylene). ... (05 Mar 2000) ...

triple DNA
<molecular biology> A variation of DNA, in which there is a third strand of nucleotides binding to the first two by specific base pairing. ... (14 Nov 1997) ...

triple helix
The superhelix formed (right-handed) from three individual collagen helices (each being left-handed). ... (05 Mar 2000) ...

triple phosphate
Magnesium ammonium phosphate, MgNH4PO4, a crude phosphate fertiliser product from phosphate rock and phosphoric acid. ... Trisodium phosphate, Na3PO4;used to emulsify fats, oil, and grease; an irritant. ... (05 Mar 2000) ...

triple point
The temperature at which all three phases (i.e., solid, liquid, and gas) are in equilibrium; the triple point of water (273.16 K) is a fundamental fixed point in temperature scales. ... (05 Mar 2000) ...

triple response
<immunology> The vascular changes in the skin in response to mild mechanical injury, an outward spreading zone of reddening flare) followed rapidly by a weal (swelling) at the site of injury. ... Redness, heat and swelling, three of the cardinal signs of inflammation, are present. ... (18 Nov 1997) ...

triple rhythm
A triple cadence to the heart sounds at any heart rate, due to the easy audibility of a third (usually) or fourth heart sound, or at faster rates a summation sound due to coincidence of the third and fourth heart sounds. ... (05 Mar 2000) ...

triple symptom complex
Synonym for Behcet's syndrome ... <syndrome> A multisystem, chronic recurrent disease characterised by ulceration in the mouth and genitalia, iritis, uveitis, arthritis and thrombophlebitis. Often treated with immunosuppressive therapy (corticosteroids, chlorambucil). ... (27 Sep 1997) ...

triple vision
Synonym for triplopia ... Visual defect in which three images of the same object are seen. ... Synonym: triple vision. ... Origin: G. Triploos, triple, + opsis, sight ... (05 Mar 2000) ...

triple X syndrome
<syndrome> In principle, the phenotypic features characteristic of trisomy of the X chromosome. Original observations (made in mental institutions) were seriously biased and the phenotypic changes spurious; now, even the remaining claim, that there is mild mental retardation, is suspect. The outstanding feature of the syndrome is the occurenc …

triple-tail
<zoology> An edible fish (Lobotes Surinamensis) found in the warmer parts of all the oceans, and common on the southern and middle coasts of the United States. When living it is silvery gray, and becomes brown or blackish when dead. Its dorsal and anal fins are long, and extend back on each side of the tail. It has large silvery scales which …