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


acetylornithinase
Synonym for acetylornithine deacetylase ... <enzyme> An enzyme catalyzing the hydrolysis of N2-acetyl-l-ornithine to l-ornithine and acetate. ... Synonym: acetylornithinase. ... (05 Mar 2000) ...

acetylornithine deacetylase
<enzyme> An enzyme catalyzing the hydrolysis of N2-acetyl-l-ornithine to l-ornithine and acetate. ... Synonym: acetylornithinase. ... (05 Mar 2000) ...

acetylpolyamine amidohydrolase
<enzyme> From mycoplana bullata ferm bp-1845; shows broad substrate specificity and high affinity for deacetylation of various acetylpolyamines ... Registry number: EC 3.5.1.- ... Synonym: apha gene product ... (26 Jun 1999) ...

acetylpolyamine deacetylase
<enzyme> Catalyses the deactylation of acetylated polyamines ... Registry number: EC 3.5.1.- ... (26 Jun 1999) ...

acetylsalicylic acid
<drug> An odourless, white, slightly bitter drug used to reduce pain, fever, inflammation and sometimes to prevent blood clotting. Also called aspirin. Some people cannot tolerate it because it can cause stomach bleeding, however. It is soluble in both water and alcoholand melts at 132 to 136 degrees C. ... (06 May 1997) ...

acetylserotonin
<hormone> An acetylated form of the hormone serotonin. Along with serotonin and the hormone melatonin, it is produced in the pineal gland in the brain. ... (13 Nov 1997) ...

acetylserotonin n-methyltransferase
<enzyme> An enzyme that catalyses the transfer of a methyl group from s-adenosylmethionine to n-acetylserotonin to form n-acetyl-5-methoxytryptamine (melatonin). ... Chemical name: S-Adenosyl-L-methionine:N-acetylserotonin O-methyltransferase ... Registry number: EC 2.1.1.4 ... (12 Dec 1998) ...

acetylspermidine deacetylase
<enzyme> Releases acetic acid from n-1-acetylspermidine, n-8-acetylspermidine and n-1-acetylspermine ... Registry number: EC 3.5.1.48 ... Synonym: acylpolyamine amidohydrolase, n(8)-acetylspermidine deacetylase, n(1)-acetylspermidine deacetylase ... (26 Jun 1999) ...

acetyltannic acid
An astringent used for treatment of diarrhoea. ... Synonym: diacetyltannic acid, tannylacetate. ... (05 Mar 2000) ...

acetylthiocholine
<chemical> An agent used as a substrate in assays for cholinesterases, especially to discriminate among enzyme types. ... Chemical name: Ethanaminium, 2-(acetylthio)-N,N,N-trimethyl- ... (12 Dec 1998) ...

acetyltransferase
Any enzyme transferring acetyl groups from one compound to another. ... See: acetyl-CoA acetyltransferase, choline acetyltransferase, dihydrolipoamide acetyltransferase. ... Synonym: transacetylase. ... (05 Mar 2000) ...

acetyltransferases
<enzyme> Enzymes catalyzing the transfer of an acetyl group, usually from acetyl coenzyme a, to another compound. ... Registry number: EC 2.3.1. ... (12 Dec 1998) ...

achalasia
<gastroenterology> Constriction of the lower portion of the food pipe (oesophagus) due to inability of the sphincter muscles to relax. ... Symptoms include difficulty swallowing, chest pain, vomiting and heartburn. ... Treatment includes oesophageal dilation using special instruments or medications (for example nitroglycerin, calcium channel bl …

Achard syndrome
<syndrome> Arachnodactyly with small receding mandible, broad skull, and joint laxity limited to the hands and feet; genetics unclear. ... (05 Mar 2000) ...

Achard-Thiers syndrome
<syndrome> One form of a virilizing disorder of adrenocortical origin in women, characterised by masculinization and menstrual disorders in association with manifestations of diabetes mellitus, such as glucosuria. ... (05 Mar 2000) ...

Achard, E. Charles
<person> French physician, 1860-1941. ... See: Achard syndrome, Achard-Thiers syndrome. ... (05 Mar 2000) ...

achate
1. Purchase; bargaining. ... 2. Provisions. Same as Cates. ... Origin: F. Achat purchase. See Cates. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achatina
<zoology> A genus of land snails, often large, common in the warm parts of America and Africa. ... Origin: NL, from Gr. Agate. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ache
<botany> A name given to several species of plants; as, smallage, wild celery, parsley. ... Origin: F. Ache, L. Apium parsley. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acheilia
Congenital absence of the lips. ... Origin: G. A-priv. + cheilos, lip ... (05 Mar 2000) ...

acheilous
Characterised by or relating to acheilia. ... (05 Mar 2000) ...

acheiria
1. Congenital absence of one or both hands. ... 2. Anaesthesia in, with loss of the sense of possession of, one or both hands; a condition sometimes noted in hysteria. ... 3. A form of dyscheiria in which the patient is unable to tell on which side of the body a stimulus has been applied. ... Origin: G. A-priv. + cheir, hand ... (05 Mar 2000) ...

acheirous
Characterised by or relating to acheiria. ... (05 Mar 2000) ...

Achenbach syndrome
<syndrome> Haematoma of the finger pad with accompanying oedema; of unknown cause in the absence of disturbances in blood coagulation mechanisms. ... (05 Mar 2000) ...

Achenbach, Walter
<person> 20th century German internist. ... See: Achenbach syndrome. ... (05 Mar 2000) ...

achene
<botany> A dry, closed (indehiscent) fruit which contains a single seed. ... (06 May 1997) ...

achenium
<botany> A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; called a naked seed by the earlier botanists. ... Alternative forms: akene and achaenium. ... Origin: Gr. Priv. + to gape. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acheron
A river in the Nether World or infernal regions; also, the infernal regions themselves. By some of the English poets it was supposed to be a flaming lake or gulf. ... Origin: L, fr. Gr. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achiasmatic
<cell biology> Undergoing meiosis, a process where the cells nucleus divides, without reaching the stage at which homologous chromatids pair to exchange genetic material (called chiasmata). ... (13 Nov 1997) ...

achievement
Success in bringing an effort to the desired end; the degree or level of success attained in some specified area (especially. Scholastic) or in general. ... (12 Dec 1998) ...

achievement age
The relationship between the chronologic age and the age of achievement, as established by standard achievement tests. ... (05 Mar 2000) ...

achievement motive
An acquired, chronic need to succeed in the face of recognizable obstacles; its strength is usually diagnosed from recurring themes in stories told by the individual while taking a thematic apperception test or from other assessment instruments used by clinical psychologists. ... (05 Mar 2000) ...

achievement test
A standardised test used to measure acquired learning, e.g., competence in a specific subject area such as reading or arithmetic, in contrast to an intelligence test which is a useful index of potential ability or learning. ... (05 Mar 2000) ...

Achilles
Mythical Greek warrior, vulnerable only in the heel. ... See: Achilles bursa, Achilles reflex, Achilles tendon. ... (05 Mar 2000) ...

Achilles bursa
Synonym for bursa of tendo calcaneus ... Bursa between the tendo calcaneus and the upper part of the posterior surface of the calcaneum. ... Synonym: bursa tendinis calcanei, bursa achillis, Achilles bursa. ... (05 Mar 2000) ...

Achilles reflex
A contraction of the calf muscles when the tendo calcaneus is sharply struck. ... Synonym: ankle jerk, ankle reflex, tendo Achillis reflex, triceps surae reflex. ... (05 Mar 2000) ...

achilles tendon
<anatomy> The tendon which attaches to the heel and originates from the muscles in the calf (the gastrocnemius and soleus muscles). A strong fibrous tendon which connects the gastrocnemius muscle (calf) to the calcaneous bone in the foot. ... (27 Sep 1997) ...

achilles' tendon
<anatomy> The strong tendon formed of the united tendons of the large muscles in the calf of the leg, an inserted into the bone of the heel; so called from the mythological account of Achilles being held by the heel when dipped in the River Styx. ... Origin: L. Achillis tendo. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achillobursitis
Inflammation of a bursa in proximity to the tendo calcaneus. ... Synonym: retrocalcaneobursitis. ... (05 Mar 2000) ...

achillodynia
Pain due to inflammation of the bursa between the calcaneus and the tendo calcaneus (achillobursitis). ... Origin: Achilles (tendon) + G. Odyne, pain ... (05 Mar 2000) ...

achillorrhaphy
Suture of the tendo calcaneus. ... Origin: Achilles (tendon) + G. Rhaphe, a sewing ... (05 Mar 2000) ...

achillotenotomy
Synonym: achillotomy. ... Origin: Achilles (tendon) + G. Tenon, tendon, + tome, a cutting ... (05 Mar 2000) ...

achillotomy
<procedure> Division of the tendo calcaneus. ... Synonym: achillotenotomy. ... Origin: Achilles (tendon) + G. Tome, incision ... (05 Mar 2000) ...

achilous
<botany> Without a lip. ... Origin: Gr. Priv. + lip. ... Source: Websters Dictionary ... (01 Mar 1998) ...

aching
That aches; continuously painful. See Ache. Ach'ingly, 'The aching heart, the aching head.' (Longfellow) ... Source: Websters Dictionary ... (01 Mar 1998) ...

achiote
Seeds of the annotto tree; also, the colouring matter, annotto. ... Origin: Sp. Achiote, fr. Indian achiotl. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achiral
<chemistry> A term used to describe a molecule which, in a given configuration, is superimposible on its mirror image. This is in contrast to chiral molecules which cannot be superimposed on their mirror images. ... (13 Nov 1997) ...

achiropody
Congenital absence of the hands and feet; autosomal recessive inheritance. ... Origin: G. A-priv. + cheir, hand, + podos, foot ... (05 Mar 2000) ...

achlamydate
<zoology> Not possessing a mantle; said of certain gastropods. ... Origin: Gr. Priv. + . A short cloak. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achlamydeous
<botany> Naked; having no floral envelope, neither calyx nor corolla. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achlorhydria
<gastroenterology> The absence of hydrochloric acid from the gastric juice. ... (27 Sep 1997) ...

achlorhydric anaemia
A form of chronic hypochromic microcytic anaemia associated with achlorhydria or achylia gastrica; observed most frequently in women in the third to fifth decades. ... Synonym: Faber's anaemia, Faber's syndrome. ... (05 Mar 2000) ...

achlorophyllous
Without chlorophyll, as in fungi. ... (05 Mar 2000) ...

acholeplasma
A genus of gram-negative organisms including saprophytic and parasitic or pathogenic species. ... (12 Dec 1998) ...

Acholeplasma axanthum
A species originally found in a murine leukaemia cell line; ecology not determined. ... (05 Mar 2000) ...

Acholeplasma granularum
A species that occurs as a commensal in swine; pathogenicity not determined. ... (05 Mar 2000) ...

acholeplasma laidlawii
An organism originally isolated from sewage, manure, humus, and soil, but recently found as a parasite in mammals and birds. ... (12 Dec 1998) ...

acholeplasmataceae
Gram-negative organisms including apparently free-living saprophytes as well as mammalian and avian parasites, and possibly pathogens. ... (12 Dec 1998) ...

acholia
<gastroenterology> Absence of or failure to secrete bile. ... (09 Oct 1997) ...

acholic
Without bile, as in acholic (pale) stools. ... (05 Mar 2000) ...

acholous
<medicine> Lacking bile. ... Source: Websters Dictionary ... (01 Mar 1998) ...

acholuria
<gastroenterology> A term used to describe the absence of bile pigment in the urine, usually in the context of describing a type of jaundice characterised by this. ... Origin: Gr. Ouron = urine ... (13 Nov 1997) ...

acholuric
Without bile in the urine. ... (05 Mar 2000) ...

acholuric jaundice
Jaundice with excessive amounts of unconjugated bilirubin in the plasma and without bile pigments in the urine. ... (05 Mar 2000) ...

achondrogenesis
Dwarfism accompanied by various bone aplasias of all four limbs, a normal or enlarged skull, and a short trunk with delayed ossification of the lower spine; autosomal recessive inheritance. A new dominant mutation of type II collagen has been reported. ... Origin: G. A-priv., + chondros, cartilage, + genesis, origin ... (05 Mar 2000) ...

achondroplasia
<paediatrics> A birth deformity characterised by imperfect bone formation. It results in dwarfs with normal-sized heads but short arms and legs. ... Origin: Gr. Plassein = to form ... (27 Sep 1997) ...

achondroplastic
Relating to or characterised by achondroplasia. ... (05 Mar 2000) ...

achondroplastic dwarfism
See: achondroplasia. ... (05 Mar 2000) ...

achoo syndrome
<syndrome> A disorder characterised by nearly uncontrollable paroxysms of sneezing provoked in a reflex fashion by the sudden exposure of a dark-adapted subject to intensely bright light, usually sunlight. ... Inheritance: autosomal dominant. ... (05 Aug 1998) ...

achordal
Synonym for achordate ... Referring to animal forms below the Chordata that do not develop a notochord or chorda. ... (05 Mar 2000) ...

achordate
Referring to animal forms below the Chordata that do not develop a notochord or chorda. ... (05 Mar 2000) ...

achoresis
Permanent contraction of a hollow viscus, such as the stomach or bladder, whereby its capacity is reduced. ... Origin: G. A-priv. + choreo, to make room, fr. Choros, space ... (05 Mar 2000) ...

Achorion
Former name for Trichophyton. ... Origin: G. Achor, dandruff ... (05 Mar 2000) ...

AChR
<abbreviation> For acetylcholine receptor. ... (29 Dec 1997) ...

achrestic anaemia
A form of chronic progressive macrocytic anaemia that can be fatal in which the changes in bone marrow and circulating blood closely resemble those of pernicious anaemia, but in which there is only transient or no response to therapy with vitamin B12; glossitis, gastrointestinal disturbances, central nervous system disease, and pyrexia are not obse …

achroacyte
A colourless cell. ... Origin: G. A-priv. + chroa, colour, + kytos, a hollow (cell) ... (05 Mar 2000) ...

achroacytosis
An obsolete term for lymphocytosis. ... (05 Mar 2000) ...

achrodextrin
Synonym: achroodextrin. ... Origin: G. A-priv. + chroma, colour, + dextrin ... (05 Mar 2000) ...

achromacyte
Synonym for 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 …

achromasia
1. Pallor associated with hippocratic facies, emaciation, and weakness, often heralding a moribund state. ... Synonym: cachectic pallor, achromia. ... Origin: G. Achromos, colourless ... (05 Mar 2000) ...

achromat
A person exhibiting achromatopsia. ... Origin: G. A-priv. + chroma, colour ... (05 Mar 2000) ...

achromatic
<microscopy> Literally, colour-free. A lens or prism is said to be achromatic when corrected for two colours. The remaining colour seen in an image formed by such a lens is said to be secondary chromatic aberration. ... A truly achromatic lens would transmit light without decomposing it spectrally and there would be no colour fringing in the i …

achromatic aplanatic condenser
<microscopy> A well-corrected microscope condenser lens, corrected for chromatic and spherical aberrations and satisfying the sine condition. ... (05 Aug 1998) ...

achromatic apparatus
The nonstaining asters and spindle fibres in a dividing cell. ... (05 Mar 2000) ...

achromatic lens
A compound lens made of two or more lens's having different indices of refraction, so correlated as to minimise chromatic aberration. ... (05 Mar 2000) ...

achromatic objective
<microscopy> An objective that is corrected chromatic for two colours, and spherically for one, usually in the yellow-green part of the spectrum. ... (05 Aug 1998) ...

achromatic threshold
Synonym for visual threshold ... Threshold of visual sensation, the minimal light intensity evoking a visual sensation. ... Synonym: achromatic threshold, minimum light threshold. ... (05 Mar 2000) ...

achromatic vision
Synonym for achromatopsia ... A severe congenital deficiency in colour perception, often associated with nystagmus and reduced visual acuity. ... Synonym: achromatic vision, monochromasia, monochromasy, monochromatism. ... Origin: G. A-priv. + chroma, colour, + opsis, vision ... (05 Mar 2000) ...

achromatically
In an achromatic manner. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromaticity
Synonym for achromatism ... The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. ... Origin: Cf. F. Achromatisme. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatin
<biology> Tissue which is not stained by fluid dyes. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatinic
Relating to or containing achromatin. ... (05 Mar 2000) ...

achromatism
The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. ... Origin: Cf. F. Achromatisme. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatization
The act or process of achromatizing. ... Origin: Cf. F. Achromatisation. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatize
To deprive of colour; to make achromatic. ... Origin: Gr. Priv. + colour. ... Source: Websters Dictionary ... (01 Mar 1998) ...

achromatocyte
Synonym for 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 …

achromatolysis
Dissolution of the achromatin of a cell or of its nucleus. ... Synonym: karyoplasmolysis. ... (05 Mar 2000) ...

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) ...

achromatophilia
A condition of being refractory to staining processes. ... (05 Mar 2000) ...

achromatopsia
A severe congenital deficiency in colour perception, often associated with nystagmus and reduced visual acuity. ... Synonym: achromatic vision, monochromasia, monochromasy, monochromatism. ... Origin: G. A-priv. + chroma, colour, + opsis, vision ... (05 Mar 2000) ...