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

metric ton
(or tonne) 1000 kilograms. 1 metric ton = 2,204.62 lb = 1.023 short tons. ... (05 Dec 1998) ...

metrifonate
Synonym for trichlorfon ... <chemical> A organochlorophosphate cholinesterase inhibitor that is used as an insecticide for the control of flies and roaches. It is also used in anthelmintic compositions for animals. ... Pharmacological action: anthelmintic, cholinesterase inhibitor, insecticide, organophosphate. ... Chemical name: Phosphonic acid …

metriocephalic
Having a head well proportioned to height; denoting a skull with an index between 72 and 77. ... See: orthocephalic. ... Origin: G. Metrios, moderate, fr. Metron, measure, + kephale, head ... (05 Mar 2000) ...

metrizamide
<chemical> 2-((3-(acetylamino)-5-(acetylmethylamino)-2,4,6- triiodobenzoyl)amino)-2-deoxy-d-glucose. Solute for density gradient centrifugation offering higher maximum solution density without the problems of increased viscosity. It is also being used as a resorbable, non-ionic contrast medium. ... Pharmacological action: contrast media. ... Ch …

metrizoate
<chemical> 3-acetamido-2,4,6-triiodo-5-(n-methylacetamido)benzoate. Usually the sodium salt. Contrast medium suitable for angiography. ... Pharmacological action: contrast media. ... Chemical name: Benzoic acid, 3-(acetylamino)-5-(acetylmethylamino)-2,4,6-triiodo- ... (12 Dec 1998) ...

metrizoate sodium
Sodium 3-acetamido-5-(N-methylacetamido)-2,4,6-triiodobenzoate;a diagnostic radiopaque medium. ... Synonym: metrizamide. ... (05 Mar 2000) ...

metro-
See: metr-. ... Origin: G. Metra, uterus ... (05 Mar 2000) ...

metrocyte
Synonym: mother cell. ... Origin: G. Meter, mother, + kytos, a hollow (cell) ... (05 Mar 2000) ...

metrodin
An injectable drug consisting of pure follicle-stimulating hormone used to stimulate ovulation. ... (09 Oct 1997) ...

metrodynamometer
Instrument for measuring the force of uterine contractions. ... Origin: metro-+ G. Dynamis, power, + metron, measure ... (05 Mar 2000) ...

metrodynia
Synonym: hysteralgia. ... Origin: metro-+ G. Odyne, pain ... (05 Mar 2000) ...

metrofibroma
<tumour> A fibroma of the uterus. ... (05 Mar 2000) ...

metrography
Synonym: hysterography. ... Origin: metro-+ G. Grapho, to write ... (05 Mar 2000) ...

metrolymphangitis
Inflammation of the uterine lymphatics. ... Origin: metro-+ lymphangitis ... (05 Mar 2000) ...

metromalacia
An obsolete term for pathologic softening of the uterine tissues. ... Origin: metro-+ G. Malakia, softness ... (05 Mar 2000) ...

metronidazole
<chemical> Antiprotozoal used in amebiasis, trichomoniasis, giardiasis, and as treponemacide in livestock. It has also been proposed as a radiation sensitiser for hypoxic cells. According to the fourth annual report on carcinogens (ntp 85-002, 1985, p133), this substance may reasonably be anticipated to be a carcinogen (merck, 11th ed). ... Ph …

metronoscope
<instrument> A tachistoscopic apparatus that exposes for timed intervals short selections of printed matter for reading; used in testing and developing reading speed. ... Origin: G. Metron, measure, + skopeo, to view ... (05 Mar 2000) ...

metroparalysis
Flaccidity or paralysis of the uterine muscle during or immediately after childbirth. ... Origin: metro-+ paralysis ... (05 Mar 2000) ...

metropathia
Synonym for metropathy ... Any disease of the uterus, especially of the myometrium. ... Synonym: metropathia. ... Origin: metro-+ G. Pathos, suffering ... (05 Mar 2000) ...

metropathia haemorrhagica
Abnormal, excessive, often continuous uterine bleeding due to persistence and exaggeration of the follicular phase of the menstrual cycle; the endometrium is the seat of glandular hyperplasia with cyst formation. ... See: Swiss cheese endometrium ... Origin: L. ... (05 Mar 2000) ...

metropathic
Relating to or caused by uterine disease. ... (05 Mar 2000) ...

metropathy
Any disease of the uterus, especially of the myometrium. ... Synonym: metropathia. ... Origin: metro-+ G. Pathos, suffering ... (05 Mar 2000) ...

metroperitoneal fistula
Synonym for uteroperitoneal fistula ... A fistulous tract through the uterine wall opening into the peritoneal cavity. ... Synonym: metroperitoneal fistula. ... (05 Mar 2000) ...

metroperitonitis
Inflammation of the uterus involving the peritoneal covering. ... Synonym: perimetritis. ... Origin: metro-+ peritonitis ... (05 Mar 2000) ...

metrophlebitis
Inflammation of the uterine veins usually following childbirth. ... Origin: metro-+ G. Phleps, vein, + -itis, inflammation ... (05 Mar 2000) ...

metroplasty
Synonym for uteroplasty ... Plastic surgery of the uterus. ... Synonym: hysteroplasty, metroplasty. ... Origin: utero-+ G. Plastos, formed ... (05 Mar 2000) ...

metropolis
1. The mother city; the chief city of a kingdom, state, or country. '[Edinburgh] gray metropolis of the North.' (Tennyson) ... 2. The seat, or see, of the metropolitan, or highest church dignitary. 'The great metropolis and see of Rome.' (Shak) ... Origin: L. Metropolis, Gr, prop, the mother city (in relation to colonies); mother + city. See Mother, …

metrorrhagia
<gynaecology> Uterine bleeding, usually of normal amount, occurring at completely irregular intervals, the period of flow sometimes being prolonged. ... Origin: Gr. Rhegnynai = to burst out ... (18 Nov 1997) ...

metrorrhexis
Synonym: hysterorrhexis. ... Origin: metro-+ G. Rhexis, rupture ... (05 Mar 2000) ...

metrorrhoea
Discharge of mucus or pus from the uterus. ... Origin: metro-+ G. Rhoia, a flow ... (05 Mar 2000) ...

metrosalpingitis
Inflammation of the uterus and of one or both fallopian tubes. ... Origin: metro-+ G. Salpinx, trumpet (oviduct), + -itis, inflammation ... (05 Mar 2000) ...

metrosalpingography
Synonym: hysterosalpingography. ... Origin: metro-+ G. Salpinx, tube, + grapho, to write ... (05 Mar 2000) ...

metrostaxis
Small but continuous haemorrhage of the uterine mucous membrane. ... Origin: metro-+ G. Staxis, a dripping ... (05 Mar 2000) ...

metrostenosis
A narrowing of the uterine cavity. ... Origin: metro-+ G. Stenosis, a narrowing ... (05 Mar 2000) ...

metrotomy
<surgery> The operation of cutting into the uterus; hysterotomy; the Caesarean section. ... Origin: Gr. Womb + to cut: cf. F. Metrotomie. ... (01 Mar 1998) ...

metrotrophic test
A test for the assay of oestrogenic substances; immature female rats (25 to 49 g) are injected subcutaneously with the hormone and killed after 6 hours, when the increase in uterine weight (due largely to imbibation of water) is taken as the criterion of oestrogenic activity. ... Synonym: Astwood's test. ... (05 Mar 2000) ...

mettle
Substance or quality of temperament; spirit, especially. As regards honor, courage, fortitude, ardor, etc.; disposition; usually in a good sense. 'A certain critical hour which shall.. Try what mettle his heart is made of.' (South) 'Gentlemen of brave mettle.' (Shak) 'The winged courser, like a generous horse, Shows most true mettle when you check …

metyrapone
<chemical> Chemical name: 1-Propanone, 2-methyl-1,2-di-3-pyridinyl- ... (12 Dec 1998) ...

metyrapone reductase
<enzyme> From mouse liver microsomes, belongs to the family of carbonyl reductases; can use NADH or NADPH as co-substrates ... Registry number: EC 1.1.1.- ... (26 Jun 1999) ...

metyrapone test
<endocrinology, investigation> This test measures the ability of the pituitary gland to secrete ACTH in response to a low serum cortisol level. Under normal conditions a low serum cortisol level should stimulate the pituitary to produce ACTH, which stimulates the adrenal glands to produce more cortisol. This test is performed by injecting met …

metyrosine
Alpha-Methyl-p-tyrosine;an inhibitor of tyrosine hydroxylase and therefore a powerful inhibitor of catecholamine synthesis; used for controlling the manifestations of pheochromocytoma, in preoperative preparation, or in instances where surgical resection is contraindicated or incomplete. ... (05 Mar 2000) ...

Meulengracht's diet
A feeding program for patients with peptic ulcer disease, containing a relatively full diet free of acidic or highly seasoned food. ... (05 Mar 2000) ...

meuse fever
The area around the Meuse River was one of the great battlegrounds of world war i during which this louse-borne disease was first recognised in the trenches (called trench fever), again a major problem in the military in world war II, seen endemically in mexico, n. Africa, e, europe, and elsewhere. The cause, rochalimaea quintana, is an unusual ric …

Mev
Symbol for 1 million electron-volts. ... (05 Mar 2000) ...

mevalonate
The salt or ester of mevalonic acid. ... Mevalonate kinase, an enzyme that catalyses the reaction of mevalonate and ATP to form ADP and mevalonate 5-phosphate; this enzyme participates in the pathway for steroid synthesis; a deficiency of this enzyme will lead to mevalonic aciduria and lack of development. ... (05 Mar 2000) ...

mevalonic acid
<chemical> Chemical name: Pentanoic acid, 3,5-dihydroxy-3-methyl- ... (12 Dec 1998) ...

mevalonic aciduria
Elevated levels of mevalonic acid in the urine; associated with a deficiency of mevalonate kinase. ... (05 Mar 2000) ...

mevastatin
Fungal metabolite which is a potent inhibitor of HMG-CoA reductase, the rate-controlling enzyme in cholesterol biosynthesis. The drug, similar to lovastatin, pravastatin and simvastatin, is used in the treatment of hyperlipidemia. ... (05 Mar 2000) ...

mevastatin hydroxylase
<enzyme> Hydroxylates ml-236b (mevastatin) to pravastatin; requires NADH-cytochrome p-450 reductase ... Registry number: EC 1.14.13.- ... Synonym: cytochrome p-450sca monoxygenase, cytochrome p-450(sca) ... (26 Jun 1999) ...

mevinolin
Intermediate in terpene synthesis, an analogue of compactin, a fungal metabolite that is used to lower plasma low density lipoprotein levels. It acts as an inhibitor of HMG CoA reductase, the rate controlling enzyme in cholesterol biosynthesis. ... (18 Nov 1997) ...

mevinphos
<chemical> An organophosphate cholinesterase inhibitor that is used as an insecticide. ... Pharmacological action: cholinesterase inhibitor, insecticide, organophosphate. ... Chemical name: 2-Butenoic acid, 3-((dimethoxyphosphinyl)oxy)-, methyl ester ... (12 Dec 1998) ...

mew
1. A cage for hawks while mewing; a coop for fattening fowls; hence, any inclosure; a place of confinement or shelter; in the latter sense usually in the plural. 'Full many a fat partrich had he in mewe.' (Chaucer) 'Forthcoming from her darksome mew.' (Spenser) 'Violets in their secret mews.' (Wordsworth) ... 2. A stable or range of stables for hors …

Mexase
<chemical> Contains bromelain, pancreatin, dehydrocholic acid, iodochlorhydroquin, 4,7-phenanthroline-5,6-dione used in treatment of non-specific enteritis ... Chemical name: cholan-24-oic acid, 3,7,12-trioxo-, (5beta)-, mixt. With 5-chloro-7-iodo-8-quinolinol, pancreatin, 4,7-phenanthroline-5,6-dione and stem bromelain ... (26 Jun 1999) ...

mexenone
2-Hydroxy-4-methoxy-4'-methylbenzophenone;a sun-screening agent. ... (05 Mar 2000) ...

mexican americans
Persons living in the united states of mexican descent. ... (12 Dec 1998) ...

Mexican hat cell
Synonym for target cell ... An erythrocyte in target cell anaemia, with a dark centre surrounded by a light band that again is encircled by a darker ring; it thus resembles a shooting target; such cell's also appear after splenectomy. ... A cell lysed by cytotoxic T lymphocytes, as in graft rejection. ... Synonym: Mexican hat cell. ... (05 Mar 2000) …

Mexican hat corpuscle
Synonym for target cell ... An erythrocyte in target cell anaemia, with a dark centre surrounded by a light band that again is encircled by a darker ring; it thus resembles a shooting target; such cell's also appear after splenectomy. ... A cell lysed by cytotoxic T lymphocytes, as in graft rejection. ... Synonym: Mexican hat cell. ... (05 Mar 2000) …

mexican spotted fever
<infectious disease> An acute tick-borne illness caused by the bacteria Rickettsia rickettsii. ... The disease is characterised by sudden onset of headache, chills and fever which can persist for 2-3 weeks. A characteristic rash appears on the extremities and trunk about the 4th day of illness. ... (21 Jun 2000) ...

mexiletine
<chemical> 1-(2,6-dimethylphenoxy)-2-propanamine. Antiarrhythmic agent pharmacologically similar to lidocaine. It may have some anticonvulsant properties. ... Pharmacological action: anti-arrhythmia agents. ... Chemical name: 2-Propanamine, 1-(2,6-dimethylphenoxy)- ... (12 Dec 1998) ...

mexiletine hydrochloride
1-(2,6-Dimethylphenoxy)-2-propanamine;an orally active antiarrhythmic agent used to suppress symptomatic ventricular arrhythmias; resembles lidocaine in its actions but is orally effective. ... (05 Mar 2000) ...

Meyenburg, H Von
<person> Swiss pathologist, *1877. ... See: Meyenburg's complex, Meyenburg's disease, Meyenburg-Altherr-Uehlinger syndrome, von Meyenburg's disease. ... (05 Mar 2000) ...

Meyenburg's complex
Clusters of small bile ducts occurring in polycystic livers, separate from the portal areas. ... (05 Mar 2000) ...

Meyenburg's disease
Synonym for relapsing polychondritis ... A degenerative disease of cartilage producing a bizarre form of arthritis, with collapse of the ears, the cartilaginous portion of the nose, and the tracheobronchial tree; death may occur from chronic infection or suffocation because of loss of stability in the tracheobronchial tree of autosomal origin. ... Sy …

Meyer-Archambault loop
The fibres of the visual radiation that loop around the tip of the temporal horn. ... (05 Mar 2000) ...

Meyer-Betz disease
Synonym for myoglobinuria ... Excretion of myoglobin in the urine; results from muscle degeneration, which releases myoglobin into the blood; occurs in certain types of trauma (crush syndrome), advanced or protracted ischemia of muscle, or as a paroxysmal process of unknown aetiology. ... Synonym: idiopathic paroxysmal rhabdomyolysis, Meyer-Betz dise …

Meyer-Betz syndrome
Synonym for myoglobinuria ... Excretion of myoglobin in the urine; results from muscle degeneration, which releases myoglobin into the blood; occurs in certain types of trauma (crush syndrome), advanced or protracted ischemia of muscle, or as a paroxysmal process of unknown aetiology. ... Synonym: idiopathic paroxysmal rhabdomyolysis, Meyer-Betz dise …

Meyer-Betz, Friedrich
<person> 20th century German physician. ... See: Meyer-Betz disease, Meyer-Betz syndrome. ... (05 Mar 2000) ...

Meyer-Overton rule
<anaesthetics> Because inhalation agents act via the lipid-rich CNS cells, anaesthetic potency increases with lipid solubility. ... (05 Mar 2000) ...

Meyer-Overton theory of narcosis
Synonym for lipoid theory of narcosis ... That narcotic efficiency parallels the coefficient of partition between oil and water, and that lipoids in the cell and on the cell membrane absorb the drug because of this affinity. ... Synonym: Meyer-Overton theory of narcosis. ... (05 Mar 2000) ...

Meyer, Adolf
<person> U.S. Psychiatrist. ... Lived: 1866-1950. ... See: Meyer-Archambault loop. ... (05 Mar 2000) ...

Meyer, Edmund
<person> German laryngologist, 1864-1931. ... See: Meyer's cartilages. ... (05 Mar 2000) ...

Meyer, Georg
<person> Swiss anatomist, 1815-1892. ... See: Meyer's line, Meyer's sinus. ... (05 Mar 2000) ...

Meyer, Hans
<person> German pharmacologist, 1853-1939. ... See: Meyer-Overton rule, Meyer-Overton theory of narcosis. ... (05 Mar 2000) ...

Meyer, Willy
<person> U.S. Surgeon, 1854-1932. ... See: Meyer's reagent. ... (05 Mar 2000) ...

Meyer's cartilages
<anatomy> The anterior sesamoid cartilage's at the anterior attachments of the vocal ligaments. ... (05 Mar 2000) ...

Meyer's line
<anatomy> A line through the axis of the big toe and passing the midpoint of the heel in a normal foot. ... (05 Mar 2000) ...

Meyer's reagent
A solution of phenolphthalein 0.032, in decinormal sodium hydroxide 21, with water (distilled from glass) sufficient to make 100; in the presence of minute traces of blood, the solution becomes purple or blue-red. ... (05 Mar 2000) ...

Meyerhof oxidation quotient
<biochemistry> An index for the effect of oxygen on glycolysis and on fermentation (i.e., on the Pasteur effect); equal to the rate of anaerobic fermentation minus the rate of aerobic respiration divided by the rate of oxygen uptake. ... (21 Jun 2000) ...

Meyerhof, Otto
<person> German-U.S. Biochemist and Nobel laureate. ... Lived: 1884-1951. ... See: Embden-Meyerhof pathway, Embden-Meyerhof-Parnas pathway, Meyerhof oxidation quotient. ... (05 Mar 2000) ...

Meynert, Theodor
<person> Vienna neurologist, 1833-1892. ... See: Meynert's retroflex bundle, Meynert's cells, Meynert's commissures, Meynert's decussation, Meynert's fasciculus, Meynert's layer. ... (05 Mar 2000) ...

Meynert's cell
<pathology> Solitary pyramidal cell's found in the cortex in the region of the calcarine fissure. ... (05 Mar 2000) ...

Meynert's commissure
Synonym for commissurae supraopticae ... The commissural fibres that lie above and behind the optic chiasm. ... Synonym: Ganser's commissures, Gudden's commissures, Meynert's commissures, supraoptic commissures. ... (05 Mar 2000) ...

Meynert's fasciculus
Synonym for retroflex fasciculus ... A compact bundle of fibres arising in the habenula and passing ventralward to the interpeduncular nucleus at the base of the midbrain; part of its fibres bypass this nucleus and terminate in the raphe nuclei of the caudal mesencephalic tegmentum. ... Synonym: fasciculus retroflexus, habenulointerpeduncular tract, …

Meynert's layer
Synonym for pyramidal cell layer ... Layer 3 of the cortex cerebri. ... Synonym: Meynert's layer. ... (05 Mar 2000) ...

Meynert's retroflex bundle
Synonym for retroflex fasciculus ... A compact bundle of fibres arising in the habenula and passing ventralward to the interpeduncular nucleus at the base of the midbrain; part of its fibres bypass this nucleus and terminate in the raphe nuclei of the caudal mesencephalic tegmentum. ... Synonym: fasciculus retroflexus, habenulointerpeduncular tract, …

mezlocillin
<chemical> 3,3-dimethyl-6-(((((3-(methylsulfonyl)-2-oxo-1- imidazolidinyl)carbonyl)amino)phenylacetyl)amino)- 7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid. Semisynthetic ampicillin-derived acylureido penicillin. It has been proposed for infections with certain anaerobes and may be useful in inner ear, bile, and CNS infections. …

mezlocillin sodium
<drug> an extended spectrum penicillin antibiotic used intravenously and intramuscularly. ... Structure: C21H24NaN5O8S2 ... (21 Jun 2000) ...

mfVSG hydrolase
<enzyme> Cleaves membrane-form variant surface glycoprotein of trypanoaoma brucei to soluble variant surface glycoprotein plus sn-1,2-dimyristoyl glycerol in a phospholipase c-like reaction ... Registry number: EC 3.1.4.- ... Synonym: membrane-form variant surface glycoprotein hydrolase, vsg lipase ... (26 Jun 1999) ...

mg
<abbreviation> For milligrams. There are 1,000 milligrams in 1 gram. ... (12 Jan 1998) ...

mg-dl
A measure of concentration (mass per unit volume) using milligrams per decilitre ... (27 Sep 1997) ...

mg-l
Milligrams per liter. ... (05 Dec 1998) ...

MGD
Million gallons per day. ... (05 Dec 1998) ...

MGP
<abbreviation> Matrix Gla protein. ... (05 Mar 2000) ...

MHA-TP test
Synonym for microhemagglutination-Treponema pallidum test ... A microtiter version of the Treponema pallidum haemagglutination test. ... Synonym: MHA-TP test. ... (05 Mar 2000) ...

MHC
Synonym for major histocompatibility complex ... The set of gene loci specifying major histocompatibility antigens, for example HLA in man, H 2 in mice, RLA in rabbits, RT 1 in rats, DLA in dogs, SLA in pigs, etc. ... Acronym: MHC ... (18 Nov 1997) ...

MHC class I protein
<protein> The antigen-presenting molecule found on all nucleated vertebrate cells. ... (09 Oct 1997) ...

MHC class II protein
<protein> The antigen-presenting molecule found primarily on macrophages and B lymphocytes. ... (09 Oct 1997) ...

MHC restriction
<immunology> Restriction on interaction between cells of the immune system because of the requirement to recognise foreign antigen is association with MHC antigens (major histocompatibility antigens). Thus, cytotoxic T-cells will only kill virally infected cells that have the same Class I antigens as themselves, whereas helper T-cells respond …

mho
Synonym: siemens. ... Origin: ohm reversed ... (05 Mar 2000) ...

MHz
Symbol for megahertz. ... (05 Mar 2000) ...