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

deacidification
The removal or neutralization of acid. ... (05 Mar 2000) ...

deacon
1. An officer in Christian churches appointed to perform certain subordinate duties varying in different communions. In the Roman Catholic and Episcopal churches, a person admitted to the lowest order in the ministry, subordinate to the bishops and priests. In Presbyterian churches, he is subordinate to the minister and elders, and has charge of ce …

deactivation
The process of rendering or of becoming inactive. ... (05 Mar 2000) ...

deacylase
1. A member of the subclass of hydrolases (EC class 3), especially of that subclass of esterases, lipases, lactonases, and hydrolases (EC subclass 3.1). ... 2. Any enzyme catalyzing the hydrolytic cleavage of an acyl group (R-CO-) in an ester linkage; also includes enzymes cleaving amide linkages (EC subclass 3.5) and similar acyl compounds. ... (05 …

dead
1. Deprived of life; opposed to alive and living; reduced to that state of a being in which the organs of motion and life have irrevocably ceased to perform their functions; as, a dead tree; a dead man. 'The queen, my lord, is dead.' 'The crew, all except himself, were dead of hunger.' (Arbuthnot) 'Seek him with candle, bring him dead or living.' ( …

DEAD box helicase
<enzyme> Family of ATP dependent DNA or RNA helicases with a 4 amino acid consensus, D E A D, that resembles an ATP binding site. ... Examples, p68, a human nuclear protein involved in cell growth, vasa, a Drosophila protein required for specification of posterior embryonic structures. ... (18 Nov 1997) ...

dead fingers
Synonym for acroasphyxia ... Impaired digital circulation, possibly a mild form of Raynaud's disease, marked by a purplish or waxy white colour of the fingers, with subnormal local temperature and paresthesia. ... Synonym: dead fingers, waxy fingers. ... Origin: acro-+ G. Asphyxia, stoppage of the pulse ... (05 Mar 2000) ...

dead foetus syndrome
<obstetrics, syndrome> A syndrome characterised by lengthy intrauterine retention of a dead foetus usually greater than 4 weeks with development of hypofibrinogenaemia and occasionally disseminated intravascular coagulopathy. ... (05 Mar 2000) ...

dead nerve
<anatomy, nerve> Misnomer for nonvital dental pulp. ... (05 Mar 2000) ...

dead pulp
Synonym for necrotic pulp ... Necrosis of the dental pulp which clinically does not respond to thermal stimulation; the tooth may be asymptomatic or sensitive to percussion and palpation. ... Synonym: dead pulp, nonvital pulp. ... (05 Mar 2000) ...

dead space
A cavity, potential or real, remaining after the closure of a wound which is not obliterated by the operative technique. ... See: anatomical dead space, physiologic dead space. ... (05 Mar 2000) ...

dead tooth
A misnomer for pulpless tooth. ... (05 Mar 2000) ...

dead tracts
Dentin areas characterised by degenerated odontoblastic processes; may result from injury caused by caries, attrition, erosion, or cavity preparation. ... (05 Mar 2000) ...

dead-end host
A host from which infectious agents are not transmitted to other susceptible host's. ... (05 Mar 2000) ...

deadly
1. Capable of causing death; mortal; fatal; destructive; certain or likely to cause death; as, a deadly blow or wound. ... 2. Aiming or willing to destroy; implacable; desperately hostile; flagitious; as, deadly enemies. 'Thy assailant is quick, skillful, and deadly.' (Shak) ... 3. Subject to death; mortal. ... <botany> Deadly nightshade, a pois …

deadly agaric
Synonym for amanita phalloides ... <fungus> A poisonous species of mushroom known for destructive effects on the liver and kidneys. ... (27 Sep 1997) ...

deadly nightshade
Synonym for belladonna ... <botany> An herbaceous European plant (Atropa belladonna) with reddish bell-shaped flowers and shining black berries. The whole plant and its fruit are very poisonous, and the root and leaves are used as powerful medicinal agents. Its properties are largely due to the alkaloid atropine which it contains. Called also …

deae-cellulose
<chemical> Diethylaminoethylcellulose. Cellulose derivative used in chromatography, as ion-exchange material, and for various industrial applications. ... Chemical name: Cellulose, 2-(diethylamino)ethyl ether ... (12 Dec 1998) ...

deae-dextran
<chemical> Diethylaminoethyldextran. Used as a support for ion-exchange chromatography. ... Chemical name: Dextran, 2-(diethylamino)ethyl ether ... (12 Dec 1998) ...

deaeration
Removal of gases from a liquid. ... (05 Dec 1998) ...

deaf
1. Wanting the sense of hearing, either wholly or in part; unable to perceive sounds; hard of hearing; as, a deaf man. 'Come on my right hand, for this ear is deaf.' (Shak) ... 2. Unwilling to hear or listen; determinedly inattentive; regardless; not to be persuaded as to facts, argument, or exhortation; with to; as, deaf to reason. 'O, that men's e …

deaf-mute
An individual with deafmutism. ... (05 Mar 2000) ...

deafferentation
A loss of the sensory input from a portion of the body, usually caused by interruption of the peripheral sensory fibres. ... Origin: L. De, from, + afferent ... (05 Mar 2000) ...

deafferentation pain
<symptom> Pain due to loss of sensory input into the central nervous system, as occurs with avulsion of the brachial plexus or other types of lesions of peripheral nerves or because of pathology of the central nervous system. ... (16 Dec 1997) ...

deafmutism
Inability to speak, due to congenital or early acquired profound deafness. ... Endemic deafmutism, deafmutism in individuals living in regions where goiter is prevalent, due to severe thyroid deficiency. ... (05 Mar 2000) ...

deafness
A condition in which the sense of hearing in both ears is not functional for ordinary purposes of life. The hearing level for speech is approximately 71 decibels I.s.o. (international organization for standardization) or 61 db a.s.a. (american standards association) or greater. ... (12 Dec 1998) ...

deafness, sudden
Sensorineural hearing loss which develops over a period of hours or a few days, varying in severity from mild to total. ... (12 Dec 1998) ...

deal
1. A part or portion; a share; hence, an indefinite quantity, degree, or extent, degree, or extent; as, a deal of time and trouble; a deal of cold. 'Three tenth deals [parts of an ephah] of flour.' (Num. Xv. 9) 'As an object of science it [the Celtic genius] may count for a good deal . . . As a spiritual power.' (M. Arnold) 'She was resolved to be …

dealbation
The act of whitening, bleaching, or blanching. ... Origin: L. De-albo, pp. -atus, to whiten ... (05 Mar 2000) ...

dealcoholization
The removal of alcohol from a fluid; in histologic technique, the removal of alcohol from a specimen that has been previously immersed in this fluid. ... (05 Mar 2000) ...

dealkylation
The removing of alkyl groups from a compound. ... (12 Dec 1998) ...

deallergise
Synonym for desensitise ... 1. To reduce or remove any form of sensitivity. ... Synonym: deallergise. ... 2. To effect desensitization. ... 3. In dentistry, to eliminate or subdue the painful response of exposed, vital dentin to irritative agents or thermal changes. ... (05 Mar 2000) ...

deamidases
Synonym for amidohydrolases ... <enzyme> Registry number: EC 3.5. ... (12 Dec 1998) ...

deamidation
Deamidization ... The hydrolytic removal of an amide group. ... (05 Mar 2000) ...

deamidise
To perform deamidation. ... Synonym: desamidise. ... (05 Mar 2000) ...

deamidizing enzymes
Synonym for amidohydrolases ... <enzyme> Registry number: EC 3.5. ... (12 Dec 1998) ...

deaminase
<enzyme> An enzyme which removes amino groups from compounds, producing ammonia in the process. ... (09 Oct 1997) ...

deaminases
Enzymes catalyzing simple hydrolysis of C-NH2 bonds of purines, pyrimidines, and pterins, usually named in terms of the substrate, e.g., guanine deaminases, adenosine deaminases, AMP deaminases, pterin deaminases and thus producing ammonia; not generally used for deamination of noncyclic amides. Deaminases are distinguished from ammonia-lyases (EC …

deaminating enzymes
Synonym for deaminases ... Enzymes catalyzing simple hydrolysis of C-NH2 bonds of purines, pyrimidines, and pterins, usually named in terms of the substrate, e.g., guanine deaminases, adenosine deaminases, AMP deaminases, pterin deaminases and thus producing ammonia; not generally used for deamination of noncyclic amides. Deaminases are distinguishe …

deamination
<biochemistry> The process through which enzymes strip amino groups off biomolecules. ... (09 Oct 1997) ...

deaminise
To perform deamination. ... (05 Mar 2000) ...

deaminoneuraminate hydrolase
<enzyme> Catalyses hydrolysis of alpha-ketosidic 2-keto-3-deoxy-d-glycero-d-galacto-nonic acid linkages ... Registry number: EC 3.2.1.- ... Synonym: deaminoneuraminosyl glycohydrolase, kdnase ... (26 Jun 1999) ...

dean
1. A dignitary or presiding officer in certain ecclesiastical and lay bodies; especially, an ecclesiastical dignitary, subordinate to a bishop. Dean of cathedral church, the chief officer of a chapter; he is an ecclesiastical magistrate next in degree to bishop, and has immediate charge of the cathedral and its estates. Dean of peculiars, a dean ho …

Dean's fluorosis index
An index that measures the degree of mottled enamel (fluorosis) in teeth; used most often in epidemiological field studies. ... (05 Mar 2000) ...

deanol
<chemical> An antidepressive agent that has also been used in the treatment of movement disorders. The mechanism of action is not well understood. ... Pharmacological action: antidepressive agents, anti-dyskinesia agents. ... Chemical name: Ethanol, 2-(dimethylamino)- ... (12 Dec 1998) ...

deanol acetamidobenzoate
The p-acetamidobenzoic acid salt of 2-dimethylaminoethanol; a central nervous system stimulant. ... (05 Mar 2000) ...

dear
1. Bearing a high price; high-priced; costly; expensive. 'The cheapest of us is ten groats too dear.' (Shak) ... 2. Marked by scarcity or dearth, and exorbitance of price; as, a dear year. ... 3. Highly valued; greatly beloved; cherished; precious. 'Hear me, dear lady.' 'Neither count I my life dear unto myself.' (Acts xx. 24) 'And the last joy was d …

dearterialization
Changing the character of arterial blood to that of venous blood; i.e., deoxygenation of blood. ... (05 Mar 2000) ...

death
1. The cessation of all vital phenomena without capability of resuscitation, either in animals or plants. ... Local death is going on at times and in all parts of the living body, in which individual cells and elements are being cast off and replaced by new; a process essential to life. General death is of two kinds; death of the body as a whole (so …

death certificate
Official, legal document and vital record, signed by a licensed physician or other designated authority, that includes cause of death, decedent's name, sex, place of residence, date of death; other information, e.g., birth date, birth place, occupation may be included; the immediate cause of death is recorded on the first line of the certificate, f …

death certificates
Official records of individual deaths including the cause of death certified by a physician, and any other required identifying information. ... (12 Dec 1998) ...

death instinct
The instinct of all living creatures toward self-destruction, death, or a return to the inorganic lifelessness from which they arose. ... Synonym: aggressive instinct. ... (05 Mar 2000) ...

death phase
<cell culture> The final growth phase in a culture, during which nutrients have been depleted and cell number decreases. ... (09 Oct 1997) ...

death rate
The number of deaths in the population divided by the average population (or the population at midyear) is the crude death rate. In 1994, for example, the crude death rate per 1,000 population was 8.8 in the United States, 7.1 in Australia, etc. A death rate can also be tabulated according to age or cause. ... (12 Dec 1998) ...

death trance
A condition of suspended animation, marked by unconsciousness and barely perceptible respiration and heart action. ... (05 Mar 2000) ...

death-rattle
A respiratory gurgling or rattling in the throat of a dying person, caused by the loss of the cough reflex and accumulation of mucus. ... (05 Mar 2000) ...

death, black
The black plague or the plague. In 14th century Europe, the victims of the black plague had bleeding below the skin (subcutaneous haemorrhage) which made darkened ( blackened ) their bodies. The black death swept recurrently through Europe, killing half its population in the middle of the 14th century. ... (12 Dec 1998) ...

death, sudden
The sudden cessation of all vital bodily functions. Legally and medically, this includes the permanent cessation of total cerebral function, spontaneous function of the respiratory system, and spontaneous function of the circulatory system. ... (12 Dec 1998) ...

death, sudden, cardiac
The sudden cessation of cardiac contraction, leading to death of the heart and, ultimately, of the individual, resulting from ventricular tachycardia-fibrillation or asystole. ... (12 Dec 1998) ...

death's-head
A naked human skull as the emblem of death; the head of the conventional personification of death. 'I had rather be married to a death's-head with a bone in his mouth. ... <zoology> ' (Shak) Death's-head moth, a very large European moth (Acherontia atropos), so called from a figure resembling a human skull on the back of the thorax. ... Synonym …

deathwatch
1. <zoology> A small beetle (Anobium tessellatum and other allied species). By forcibly striking its head against woodwork it makes a ticking sound, which is a call of the sexes to each other, but has been imagined by superstitious people to presage death. A small wingless insect, of the family Psocidae, which makes a similar but fainter soun …

Deaver, John
<person> U.S. Surgeon, 1855-1931. ... See: Deaver's incision. ... (05 Mar 2000) ...

Deaver's incision
An incision in the right lower abdominal quadrant, with medial displacement of the rectus muscle. ... (05 Mar 2000) ...

DeBakey forceps
Nontraumatic forceps used to pick up blood vessels. ... (05 Mar 2000) ...

DeBakey, Michael Ellis
<person> U.S. Heart surgeon, *1908. ... See: DeBakey's classification, DeBakey forceps. ... (05 Mar 2000) ...

DeBakey's classification
Consists of three types: Type I extends into the transverse arch and distal aorta and type II is confined to the ascending aorta. Type III dissections begin in the descending aorta, with type IIIA extending toward the diaphragm and type IIIB extending below it. ... (05 Mar 2000) ...

debanding
<dentistry> The removal of cemented orthodontic bands. ... (08 Jan 1998) ...

debauch
1. Excess in eating or drinking; intemperance; drunkenness; lewdness; debauchery. 'The first physicians by debauch were made.' (Dryden) ... 2. An act or occasion of debauchery. 'Silenus, from his night's debauch, Fatigued and sick.' (Cowley) ... Origin: Cf. F. Debauche. ... To lead away from purity or excellence; to corrupt in character or principles; …

debilitating
Denoting or characteristic of a morbid process that causes weakness. ... (05 Mar 2000) ...

debility
Weakness. ... Origin: L. Debilitas, fr. Debilis, weak, fr. De-priv. + habilis, able ... (05 Mar 2000) ...

debonding
<dentistry> The removal of the brackets from your teeth. ... (08 Jan 1998) ...

debouchement
Opening or emptying into another part. ... Origin: Fr. ... (05 Mar 2000) ...

debrancher deficiency
Synonym for brancher glycogen storage disease ... Type of glycogen storage disease, due to deficiency of amylo-1,4-1,6-transglucosidase (brancher enzyme). ... Synonym: brancher deficiency glycogenosis, debrancher deficiency. ... (05 Mar 2000) ...

debranching enzymes
Enzyme's that bring about destruction of branches in glycogen; formerly considered to be one enzyme, now known to be a mixture of transferases (4-alpha-d-glucanotransferase) and hydrolases (amylo-1,6-glucosidase). ... Synonym: debranching factors. ... (05 Mar 2000) ...

debranching factors
Synonym for debranching enzymes ... Enzyme's that bring about destruction of branches in glycogen; formerly considered to be one enzyme, now known to be a mixture of transferases (4-alpha-d-glucanotransferase) and hydrolases (amylo-1,6-glucosidase). ... Synonym: debranching factors. ... (05 Mar 2000) ...

Debre
Robert, French paediatrician and bacteriologist, *1882. ... See: Debre phenomenon, Debre-Semelaigne syndrome, Kocher-Debre-Semelaigne syndrome. ... (05 Mar 2000) ...

Debre phenomenon
In measles, the failure of the rash to develop at the site of immune serum injection. ... (05 Mar 2000) ...

Debre-Semelaigne syndrome
Synonym for Kocher-Debre-Semelaigne syndrome ... <syndrome> Autosomal recessive inherited athyrotic cretinism associated with muscular pseudohypertrophy. ... Synonym: Debre-Semelaigne syndrome. ... (05 Mar 2000) ...

debridement
<surgery> A term of French origin for the removal of necrotic, infected or foreign material from a wound. ... (18 Nov 1997) ...

debris
1. <geology> Broken and detached fragments, taken collectively; especially, fragments detached from a rock or mountain, and piled up at the base. ... 2. Rubbish, especially such as results from the destruction of anything; remains; ruins. ... Origin: F, fr. Pref. De- (L. Dis) + briser to break, shatter; perh. Of Celtic origin. ... Source: Webste …

debrisoquin
<chemical> An adrenergic neuron-blocking drug similar in effects to guanethidine. It is also noteworthy in being a substrate for a polymorphic cytochrome p-450 enzyme. Persons with certain isoforms of this enzyme are unable to properly metabolise this and many other clinically important drugs. They are commonly referred to as having a debriso …

debrisoquine sulfate
3-4-Dihydro-2(1H)-isoquinolinecarboxamidine sulfate;an antihypertensive agent resembling guanethidine; used in drug metabolism studies. ... (05 Mar 2000) ...

debt
A deficit; a liability. ... Origin: L. Debitum, debt ... (05 Mar 2000) ...

debulk
<procedure> To remove part of the bulk of. Debulking may be performed by surgery, by irradiation, by laser or by chemotherapy. ... (16 Dec 1997) ...

debulking of tumour
<surgery> The surgical removal of as much of a tumour as is possible, although the surgeon is unable to remove the whole thing. ... (09 Oct 1997) ...

debulking operation
Excision of a major part of a malignant tumour which cannot be completely removed, so as to enhance the effectiveness of subsequent radio-or chemotherapy. ... (05 Mar 2000) ...

Debye sheath
<radiobiology> The region of strong electric field in front of a material surface in contact with a plasma. Its characteristic thickness is the Debye length, and it is caused by Debye shielding of the negative surface charge resulting from electrons flowing to the surface much faster (initially) than the ions. The lost electrons leave behind …

debye shielding
<radiobiology> if a positive (or negative) charge is inserted into a plasma, it will change the local charge distribution by attracting (repelling) electrons. The net result is an additional negative (positive) charge density which cancels the effect of the initial charge at distances large compared to the Debye length. (There is a correspond …

debye sphere
<radiobiology> Sphere around a charged test particle whose radius is equal to the Debye length. ... (09 Oct 1997) ...

deca-
<prefix> Prefix used in the SI and metric systems to signify 10. Also spelled deka-. ... Origin: G. Deka, ten ... (05 Mar 2000) ...

decadron
Synonym for dexamethasone ... <drug> Steroid analogue (glucocorticoid), used as an anti-inflammatory drug. ... (18 Nov 1997) ...

decagram
Ten grams. ... (05 Mar 2000) ...

decalcification
<dentistry> The loss of calcium from your teeth. This weakens your teeth and makes them more susceptible to decay ... (08 Jan 1998) ...

decalcification, pathologic
The loss of calcium salts from bones and teeth. Bacteria may be responsible for this occurrence in teeth. Old age may be a factor contributing to calcium loss, as is the presence of diseases such as rheumatoid arthritis. ... (12 Dec 1998) ...

decalcify
To remove lime or calcium salts, especially from bones or teeth. ... (05 Mar 2000) ...

decalcifying
Denoting an agent, measure, or process that causes decalcification. ... (05 Mar 2000) ...

decaliter
Ten liters. ... (05 Mar 2000) ...

decalvant
Removing the hair; making bald. ... Origin: L. Decalvare, to make bald ... (05 Mar 2000) ...

decameter
Ten meters. ... (05 Mar 2000) ...

decamethonium bromide
Decamethylene-1,10-bis-trimethylammonium dibromide;a synthetic nondepolarising neuromuscular blocking agent used to produce muscular relaxation during general anaesthesia. ... (05 Mar 2000) ...