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mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 138795


achromatopsy
Colour blindness; inability to distinguish colours; Daltonism. ... Origin: Gr. Priv. + colour + sight. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatosis
Synonym: achromia. ... Origin: G. A-priv. + chroma, colour ... (05 Mar 2000) ...

achromatous
Colourless. ... (05 Mar 2000) ...

achromaturia
The passage of colourless or very pale urine. ... Origin: G. A-priv. + chroma, colour, + ouron, urine ... (05 Mar 2000) ...

achromia
1. Depigmentation; absence, or loss of natural pigmentation of the skin and iris; may be congenital or acquired. ... See: depigmentation. ... 2. Lack of capacity to accept stains in cells or tissue. ... Synonym: achromasia, achromatosis. ... Origin: G. A-priv. + chroma, colour ... (05 Mar 2000) ...

achromia parasitica
A phase of lessening or absence of pigmentation in cutaneous lesions, caused by the fungus Malassezia furfur. ... See: tinea versicolor. ... (05 Mar 2000) ...

achromia unguium
Synonym for leukonychia ... The occurrence of white spots or patches under the nails, of unknown cause; the decoloration may be total or in the form of lines (striate or transverse leukonychia) or dots (punctate leukonychia). ... Synonym: achromia unguium, canities unguium, leukopathia unguis. ... Origin: Leuko-+ G. Onyx (onych-), nail ... Apparent leu …

achromic
Colourless. ... (05 Mar 2000) ...

achromocyte
A hypochromic, crescent-shaped erythrocyte, probably resulting from artifactual rupture of a red cell with loss of haemoglobin. ... Synonym: achromacyte, achromatocyte, ghost corpuscle, phantom corpuscle, Ponfick's shadow, shadow corpuscle, shadow, Traube's corpuscle. ... Origin: G. A-priv. + chroma, colour, + kytos, hollow (cell) ... (05 Mar 2000) …

achromoderma
Synonym for leukoderma ... An absence of pigment, partial or total, in the skin. ... Synonym: achromoderma, hypomelanosis, leukopathia, leukopathy. ... Origin: Leuko-+ G. Derma, skin ... (05 Mar 2000) ...

achromophil
Synonym for achromatophil ... 1. Not being coloured by the histologic or bacteriologic stains. ... Synonym: achromophilic, achromophilous. ... 2. A cell or tissue that cannot be stained in the usual way. ... Synonym: achromophil. ... Origin: G. A-priv. + chroma, colour, + philos, fond ... (05 Mar 2000) ...

achromophilic
Synonym for achromatophil ... 1. Not being coloured by the histologic or bacteriologic stains. ... Synonym: achromophilic, achromophilous. ... 2. A cell or tissue that cannot be stained in the usual way. ... Synonym: achromophil. ... Origin: G. A-priv. + chroma, colour, + philos, fond ... (05 Mar 2000) ...

achromotrichia
<clinical sign> Absence or loss of pigment in the hair. ... (27 Sep 1997) ...

achroodextrin
<physiology> Dextrin not colourable by iodine. See Dextrin. ... Origin: Gr. Colourless + E. Dextrin. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achroous
Colourless; achromatic. ... Origin: Gr.; priv. + colour. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achylia
1. Absence of gastric juice or other digestive secretions. ... 2. Absence of chyle. ... Origin: G. A-priv. + chylos, juice ... (05 Mar 2000) ...

achylia gastrica
A diminished or abolished secretion of gastric juice associated with atrophy of the mucous membrane of the stomach. ... (05 Mar 2000) ...

achylia pancreatica
A deficiency or absence of pancreatic secretion, usually resulting in fatty stools, emaciation, and impaired nutrition. ... (05 Mar 2000) ...

achylous
<physiology> Without chyle. ... Origin: Gr. Without juice. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achymous
<physiology> Without chyme. ... Origin: Gr. Without juice. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acicula
Origin: L, a small needle, dimin. Of acus needle. ... One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acicular
<botany> Resembling a needle (typically used to describe the leaf of a plant). ... (06 May 1997) ...

aciculate
<botany> Used to describe a plant part which is finely scored on the surface, as if scratched by a pin. ... (09 Oct 1997) ...

aciculite
<chemical> Needle ore. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acid
<chemical, chemistry> A fundamental category of many compounds whose water-based solutions have a sour taste, turn blue litmus paper red and can combine with metals to form salts. ... They are chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or which re …

acid agglutination
The clumping together of certain microorganisms at high hydrogen ion concentration. ... (05 Mar 2000) ...

acid anhydride hydrolases
<enzyme> A group of enzymes that catalyze the hydrolysis of diphosphate bonds in compounds such as nucleoside di- and tri-phosphates, and sulfonyl-containing anhydrides such as adenylylsulfate. (enzyme nomenclature, 1992). ... Registry number: EC 3.6 ... (12 Dec 1998) ...

acid carboxypeptidase
Synonym for serine carboxypeptidase ... <enzyme> Carboxypeptidase z (scpz gene product) isolated from absidia zychae ... Registry number: EC 3.4.16.1 ... Synonym: carboxypeptidase w, carboxypeptidase yscy, carboxypeptidase cpd-s3, ybr1015 gene product, carboxypeptidase z, scpz gene product ... (26 Jun 1999) ...

acid cell
Synonym for parietal cell ... One of the cell's of the gastric glands; it lies upon the basement membrane, covered by the chief cell's, and secretes hydrochloric acid that reaches the lumen of the gland through fine intracellular and intercellular canals (canaliculi). ... Synonym: acid cell, oxyntic cell. ... (05 Mar 2000) ...

acid cholesterol ester synthetase
<enzyme> Aortal enzyme, does not require exogenous ATP or CoA; reverse reaction of cholesterol esterase ... Registry number: EC 3.1.1.- ... Synonym: cholesterol ester synthetase ... (26 Jun 1999) ...

acid deoxyribonuclease
Synonym for deoxyribonuclease II ... An endonuclease that cleaves both strands of native DNA (as well as single-stranded DNA) to produce a mixture of oligodeoxynucleotides, each ending in a 3'-phosphate. ... Synonym: acid deoxyribonuclease. ... (05 Mar 2000) ...

acid dextran
The product of acid and heat treatment of dextran. ... (05 Mar 2000) ...

acid dextrin
The product of acid and heat treatment of dextrin. ... (05 Mar 2000) ...

acid dissociation constant
<chemistry> This is the equilibrium constant for the breaking apart of a weak acid into its hydrogen and conjugate base in a water solution. ... (09 Oct 1997) ...

acid dyspepsia
Dyspepsia associated with excess gastric acidity. ... (05 Mar 2000) ...

acid etch
<dentistry> A procedure where a weak acid smeared on your teeth to ready your teeth for brackets. The acid etch helps your brackets stay on better. ... (08 Jan 1998) ...

acid etch cemented splint
A splint of heavy wire which is cemented to the labial surfaces of teeth with any of the acid etch cement techniques; used to stabilise traumatically displaced or periodontally diseased teeth. ... (05 Mar 2000) ...

acid etching, dental
Pretreatment of tooth surfaces with etching agents, usually phosphoric acid, to increase the adhesion of various resin systems. ... (12 Dec 1998) ...

acid fuchsin
A mixture of the sodium salts bi-and trisulfonic acids of rosanilin and pararosanilin; used as an indicator dye and for staining of cytoplasm and collagen. ... Synonym: rubin S, rubine. ... (05 Mar 2000) ...

acid gland
One of the gastric gland's secreting the hydrochloric acid of the gastric juice. ... Synonym: oxyntic gland. ... (05 Mar 2000) ...

acid hydrolysis
A chemical process in which acid is used to convert cellulose or starch to sugar. ... (05 Dec 1998) ...

acid indigestion
Indigestion resulting from hyperchlorhydria; often used by the laity as a synonym for pyrosis. ... (05 Mar 2000) ...

acid intoxication
Poisoning by acid products (beta-oxybutyric acid, diacetic acid, or acetone) formed as a result of faulty metabolism (e.g., uncontrolled diabetes mellitus) or by acids introduced from without; marked by epigastric pain, headache, loss of appetite, constipation, restlessness, and an odour of acetone in the breath, followed by air hunger, coma, and c …

acid loading test
<nephrology> This is a test used in the diagnosis of renal tubular acidosis. The patient takes ammonium chloride capsules for 3 days to acidify the blood (lower blood pH). A sample of the urine and the blood is then collected and the results are interpreted. ... (27 Sep 1997) ...

acid maltase
Synonym for exo-1,4-alpha-d-glucosidase ... A hydrolase removing terminal alpha-1,4-linked d-glucose residues from nonreducing ends of chains, with release of beta-d-glucose. ... Synonym: acid maltase, amyloglucosidase, gamma-amylase, glucoamylase. ... (05 Mar 2000) ...

acid oxide
An acid anhydride; an oxide of an electronegative element or radical; it can combine with water to form an acid. ... (05 Mar 2000) ...

acid perfusion test
<gastroenterology, investigation> A test used to diagnosis gastrooesophageal reflux disease. This investigation requires that the patient swallow 3 tiny tubes into the stomach. ... A mixture of hydrochloric acid (like stomach acid) and saline are alternatively injected into the tubes. The patient then reports any symptoms they may have. Some p …

acid phosphatase
<enzyme> An enzyme that catalyses the conversion of an orthophosphoric monoester and water to an alcohol and orthophosphate. ... Chemical name: Orthophosphoric-monoester phosphohydrolase (acid optimum) ... Registry number: EC 3.1.3.2 ... (12 Dec 1998) ...

acid phosphatase test for semen
A screening test for semen by determining acid phosphatase content; because seminal fluid contains high concentrations of acid phosphatase, while other body fluids and extraneous foreign materials have very low concentrations, high values of acid phosphatase on vaginal aspirate or lavage, or on wash fluid from stains, render positive identification …

acid protease
<enzyme> Any of many protein-hydrolysing rennin. Similar proteases produced by fungi such as Aspergillus oryzae are used in the manufacture of flour and soy sauce. ... (06 May 1997) ...

acid radical
A radical formed from an acid by loss of one or more hydrogen ions; e.g., SO4-, NO3-. ... (05 Mar 2000) ...

acid rain
<biology, plant biology> This is rain which has turned acidic because of the presence of sulphur or nitrogen oxides (both created from burning coal and other fossil fuels) in the atmosphere. Acid rain is a serious environmental problem, it can kill trees and harm plants and animals in lakes and ponds. ... (09 Oct 1997) ...

acid reaction
Any test by which an acid reaction is recognised such as the change of blue litmus paper to red, an excess of hydrogen ions over hydroxide ions in aqueous solution indicated by a pH value less than 7 (at 22°C). ... Compare: dissociation constant of water. ... (05 Mar 2000) ...

acid red 87
Synonym for eosin y ... Eosin Ys, the disodium salt of 2',4',5',7'-tetrabromofluorescein. ... Synonym: acid red 87, eosin yellowish. ... (05 Mar 2000) ...

acid red 91
Synonym for eosin B ... The disodium salt of 4',5'-dibromo-2',7'-dinitrofluorescein. ... Synonym: acid red 91, eosin I bluish. ... (05 Mar 2000) ...

acid reflux test
A test to detect gastroesophageal reflux by monitoring oesophageal pH by an electrode in the distal oesophagus either basally or after acid is instilled into the stomach. ... (05 Mar 2000) ...

acid rigor
Coagulation of muscle protein induced by acids. ... (05 Mar 2000) ...

acid salt
A salt in which not all of the ionizable hydrogen of the acid is replaced by the electropositive element; e.g., NaHSO4, KH2PO4. ... Synonym: bisalt, protosalt. ... (05 Mar 2000) ...

acid seromucoid
Synonym for orosomucoid ... <biology> Plasma protein of mammals and birds, 38% carbohydrate. In humans a single chain glycoprotein of 39 kD. Increased levels are associated with inflammation, pregnancy and various diseases. ... (18 Nov 1997) ...

acid soluble spore protein
<molecular biology> A DNA binding protein in the spores of some bacteria, thought to stabilise the DNA in an A configuration, so protecting it from cleavage by enzymes or UV light. ... (18 Nov 1997) ...

acid stain
<technique> A dye in which the anion is the coloured component of the dye molecule, e.g., sodium eosinate (eosin). ... (05 Mar 2000) ...

acid sulfate
Synonym for bisulfate ... A salt containing HSO4-. ... Synonym: acid sulfate. ... (05 Mar 2000) ...

acid tartrate
A salt of tartaric acid which contains an acid group still capable of combining with a base; e.g., bitartrate. ... (05 Mar 2000) ...

acid tide
A temporary increase in the acidity of the urine occurring during fasting. ... Synonym: acid wave. ... (05 Mar 2000) ...

acid wave
Synonym for acid tide ... A temporary increase in the acidity of the urine occurring during fasting. ... Synonym: acid wave. ... (05 Mar 2000) ...

acid-ash diet
Synonym for alkaline-ash diet ... A diet consisting mainly of fruits, vegetables, and milk (with minimal amounts of meat, fish, eggs, cheese, and cereals), which, when catabolised, leave an alkaline residue to be excreted in the urine. ... Synonym: acid-ash diet, basic diet. ... (05 Mar 2000) ...

acid-base balance
The normal balance between acid and base in the blood plasma, expressed in the hydrogen ion concentration or pH, resulting from the relative amounts of acidic and basic materials ingested and produced by body metabolism, compared to the relative amounts of acidic and basic materials excreted from the body and consumed by body metabolism; the normal …

acid-base equilibrium
A condition in which the net rate of acid or alkali production by the body is balanced by the net rate of acid or alkali excretion from the body, resulting in a stable concentration of hydrogen ions in the body fluids. ... (12 Dec 1998) ...

acid-base imbalance
Disturbances in the acid-base equilibrium of the body. ... (12 Dec 1998) ...

acid-citrate-dextrose
A citrate anticoagulant used for the collection and preservation of whole blood. It has largely been replaced by newer coagulants (CPD, Adsol) that allow for longer shelf life for blood and blood products. ... Acronym: ACD ... (05 Mar 2000) ...

acid-etched restoration
The restoration of tooth structure with a resin after the surface of the tooth has been treated with an acid solution that etches the tooth surface, thereby increasing retention of the restoration. ... (05 Mar 2000) ...

acid-fast
<microbiology> A term used to denote bacteria that are not decolorised by acid-alcohol after having been stained with dyes such as basic fuchsin. ... The presence of acid fast organisms can be found in cultures that contain mycobacteria or some of the nocardiae. ... (12 Jul 2000) ...

acid-fast stain
<technique> A staining technique used to determine the cell wall property of a microorganism. After stained with dye such as hot carbolfuschin, an acid-fast organism, (for example Mycobacterium species) will retain the colour in its cell wall after being washed with acid-alcohol. ... (13 Nov 1997) ...

acidaminuria
An obsolete term for aminoaciduria. ... (05 Mar 2000) ...

acidemia
An increase in the H-ion concentration of the blood or a fall below normal in pH, notwithstanding alterations in bicarbonate concentration. Individual types of acidemia are listed by specific name, e.g., isovalericacidemia, aminoacidemia, etc. ... Origin: acid + G. Haima, blood ... (05 Mar 2000) ...

acidic
<chemical> Containing a high percentage of silica; opposed to basic. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidic amino acid
An Amino acid with a second acid moiety, e.g., glutamic acid, aspartic acid, cysteic acid. ... (05 Mar 2000) ...

acidic anhydride
<chemistry> A substance (such as the oxide of a nonmetallic element) that will react with water to form an acid. ... (09 Oct 1997) ...

acidic dyes
Dye's which ionise in solution to produce negatively charged ions or anions; they consist of sodium salts of phenols and carboxylic acid dyes; their solutions tend to be neutral or slightly alkaline; examples are eosin and aniline blue. ... (05 Mar 2000) ...

acidiferous
Containing or yielding an acid. ... Origin: L. Acidus sour. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidifiable
Capable of being acidified, or converted into an acid. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidific
Producing acidity; converting into an acid. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidification
The act or process of acidifying, or changing into an acid. ... Origin: Cf. F. Acidification. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidified serum test
Lysis of the patient's red cells in acidified fresh serum, specific for paroxysmal nocturnal haemoglobinuria. ... Synonym: Ham's test. ... (05 Mar 2000) ...

acidifier
<chemistry> A simple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidify
1. To make acid; to convert into an acid; as, to acidify sugar. ... 2. To sour; to imbitter. 'His thin existence all acidified into rage.' (Carlyle) ... Origin: L. Acidus sour, acid + -fy: cf. F. Acidifier. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidimeter
<chemistry> An instrument for ascertaining the strength of acids. ... Origin: L. Acidus acid. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidimetry
<chemistry> The measurement of the strength of acids, especially by a chemical process based on the law of chemical combinations, or the fact that, to produce a complete reaction, a certain definite weight of reagent is required. Acidimet'rical. ... Origin: L. Acidus acid + -metry. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidity
<chemistry> The quality of being acid or sour, containing acid (hydrogen ions). ... Origin: L. Aciditas ... (18 Nov 1997) ...

acidly
Sourly; tartly. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidness
Acidity; sourness. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acidocyte
An obsolete term for eosinophilic leukocyte. ... Origin: acid + G. Kytos, cell ... (05 Mar 2000) ...

acidogenic fermentation
<biochemistry, microbiology> Any fermentation that produces a weak acid, such as lactic acid. ... (06 May 1997) ...

acidophil
1. One of the acid-staining cells of the anterior pituitary. ... 2. A microorganism that grows well in a highly acid media. ... Synonym: acidophilic. ... Origin: acid + G. Philos, fond ... (05 Mar 2000) ...

acidophil adenoma
<endocrinology, oncology, tumour> A benign tumour, usually found in the anterior lobe of the pituitary gland, whose cells stain with acid dyes. ... Such pituitary tumours may give rise to excessive secretion of growth hormone, resulting in gigantism or acromegaly. A specific type of acidophil adenoma may give rise to nonpuerperal galactorrhoea …

acidophil cell
A cell whose cytoplasm or its granules stain with acid dyes. ... (05 Mar 2000) ...

acidophil granule
A granule that stains with an acid dye such as eosin. ... Synonym: oxyphil granule. ... (05 Mar 2000) ...

acidophile
<microbiology> Describes any microorganism that can or must live in an acidic environment (pH below 6). ... (06 May 1997) ...

acidophilic
Having an affinity for acid dyes; denoting a cell or tissue element that stains with an acid dye, such as eosin. ... Synonym: acidophil, acidophile, oxychromatic. ... (05 Mar 2000) ...

acidophilic leukocyte
Synonym for eosinophilic leukocyte ... A polymorphonuclear leukocyte characterised by many large or prominent, refractile, cytoplasmic granules that are fairly uniform in size and bright yellow-red or orange when treated with Wright's or similar stains; the nuclei are usually larger than those of neutrophils, do not stain as deeply, and characterist …