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

decamethonium compounds
Compounds that contain the decamethylenebis(trimethyl)ammonium radical. These compounds frequently act as neuromuscular depolarising agents. ... (12 Dec 1998) ...

decamine
Synonym for dequalinium acetate ... 1,1'-decamethylenebis[4-aminoquinaldinium acetate];an antimicrobial agent. ... Synonym: decamine. ... (05 Mar 2000) ...

decanoates
Salts and esters of the 10-carbon monocarboxylic acid-decanoic acid. ... (12 Dec 1998) ...

decanoic acids
10-carbon saturated monocarboxylic acids. ... (12 Dec 1998) ...

decanoin
Synonym for caprin ... Tridecanoylglycerol;one of the substances found in butter upon which its flavor depends. ... Synonym: decanoin, glyceryl tricaprate. ... (05 Mar 2000) ...

decanormal
Rarely used term denoting the concentration of a solution 10 times that of normal. ... (05 Mar 2000) ...

decant
To pour off gently the upper clear portion of a fluid, leaving the sediment in the vessel. ... Origin: Mediev. L. Decantho, fr. De-+ canthus, the beak of a jug, fr. G. Kanthos, corner of the eye ... (05 Mar 2000) ...

decantation
Pouring off the clear upper portion of a fluid, leaving a sediment or precipitate. ... (05 Mar 2000) ...

decapacitation
Prevention of spermatozoa from undergoing capacitation and thus from becoming able to fertilise ova. ... See: decapacitation factor. ... (05 Mar 2000) ...

decapacitation factor
A factor, postulated to be present in epididymal fluid and seminal plasma, that prevents the capacitation of spermatozoa. ... (05 Mar 2000) ...

decapentaplegic
Drosophila gene, product related to TGF. ... (18 Nov 1997) ...

decapeptide
An oligopeptide containing 10 amino acids. ... (05 Mar 2000) ...

decapitate
1. To cut off the head; specifically, to remove the head of a foetus to facilitate delivery in cases of irremediable dystocia; to cut off the head of an animal in preparation for certain physiologic experiments; obsolete term. ... 2. Relating to an experimental animal with the head removed. ... Origin: L. De-, away, + caput, head ... (05 Mar 2000) ...

decapitation
Removal of a head. ... See: decapitate. ... (05 Mar 2000) ...

decapoda
1. <zoology> The order of Crustacea which includes the shrimps, lobsters, crabs, etc. ... They have a carapace, covering and uniting the somites of the head and thorax and inclosing a gill chamber on each side, and usually have five (rarely six) pairs of legs. They are divided into two principal groups: Brachyura and Macrura. Some writers reco …

decaprenyl pyrophosphate synthetase
<enzyme> Forms all-trans-decaprenyl pyrophosphate from isopentenyl pyrophosphate and either farnesyl pyrophosphate or geranylgeranyl pyrophosphate; does not transfer dimethylallyl or geranyl groups ... Registry number: EC 2.5.1.- ... Synonym: dp-pp-synthetase ... (26 Jun 1999) ...

decapsulation
Incision and removal of a capsule or enveloping membrane. ... Decapsulation of kidney, removing or stripping off the capsule of the kidney. ... (05 Mar 2000) ...

decarbonization
Rarely used term denoting the process of arterialization of the blood by oxygenation and the removal of carbon dioxide in the lungs. ... (05 Mar 2000) ...

decarboxylase
Any enzyme (EC subclass 4.1.1) that removes a molecule of carbon dioxide from a carboxylic group (e.g., from an alpha-amino acid, converting it into an amine). ... (05 Mar 2000) ...

decarboxylated dopa
Synonym for dopamine ... <drug> A catecholamine neurotransmitter and hormone (153 D), formed by decarboxylation of dehydroxyphenylalanine (dopa). A precursor of adrenaline and noradrenaline. ... Pharmacologic action: 1. Precursor of norepinephrine 2. Stimulates dopaminergic, alpha and beta-1 adrenergic receptors: 3. Dopaminergic (1-2 mcg/kg per …

decarboxylation
Removal of the carboxyl group. ... (12 Dec 1998) ...

decatenation
1. <chemistry> The unlinking of chemical elements within a ring or chain from each other. ... 2. The unlinking of identical units in a large molecule from each other. ... Compare: catenation. ... (11 Jan 1998) ...

decay
To pass gradually from a sound, prosperous, or perfect state, to one of imperfection, adversity, or dissolution; to waste away; to decline; to fail; to become weak, corrupt, or disintegrated; to rot; to perish; as, a tree decays; fortunes decay; hopes decay. 'Ill fares the land, to hastening ills a prey, Where wealth accumulates and men decay.' (Go …

decay accelerating factor
<biochemistry, protein> Plasma protein that regulates complement cascade by blocking the formation of the C3bBb complex (the C3 convertase of the alternate pathway). ... Widely distributed in tissues but deficient in paroxysmal nocturnal haemoglobinuria. ... (18 Nov 1997) ...

decay constant
<physics, radiobiology> The fraction of the amount of a radionuclide that undergoes transition per unit time. Formally: ... Lamda=dP/dt ... Where dP is the probability of a given nucleus undergoing spontaneous nuclear transition in the time interval dt. ... (16 Dec 1997) ...

decay modes
<radiobiology> Different pathways for decay of radioactive nuclei. The decay modes for a given unstable state can include beta emission (negative = electron, positive = positron), electron capture, alpha emission, fission, and gamma emission. ... (13 Nov 1997) ...

decay theory
A theory of forgetting based on the premise that an engram or memory trace dissipates progressively with time during the interval when it is not activated. ... (05 Mar 2000) ...

deceive
1. To lead into error; to cause to believe what is false, or disbelieve what is true; to impose upon; to mislead; to cheat; to disappoint; to delude; to insnare. 'Evil men and seducers shall wax worse and worse, deceiving, and being deceived.' (2 Tim. Iii. 13) 'Nimble jugglers that deceive the eye.' (Shak) 'What can 'scape the eye Of God all-seeing …

deceleration
1. The act of decelerating. ... 2. The rate of decrease in velocity per unit of time. ... (05 Mar 2000) ...

december
1. The twelfth and last month of the year, containing thirty-one days. During this month occurs the winter solstice. ... 2. With reference to the end of the year and to the winter season; as, the December of his life. ... Origin: F. Decembre, from L. December, fr. Decem ten; this being the tenth month among the early Romans, who began the year in Mar …

decemvir
Origin: L, fr. Decem ten + vir a man. ... 1. One of a body of ten magistrates in ancient Rome. ... The title of decemvirs was given to various bodies of Roman magistrates. The most celebrated decemvirs framed 'the laws of the Twelve Tables,' about 450 B. C, and had absolute authority for three years. ... 2. A member of any body of ten men in authority …

decentered lens
A lens so mounted that the visual axis does not pass through the axis of the lens. ... (05 Mar 2000) ...

decentration
Removal from the centre. ... (05 Mar 2000) ...

deception
The act of deceiving or the fact or condition of being deceived. ... (12 Dec 1998) ...

decerebrate
1. To cause decerebration. ... 2. Denoting an animal so prepared, or a patient whose brain has suffered an injury which renders him in his neurologic behaviour comparable to a decerebrate animal. ... (05 Mar 2000) ...

decerebrate reflex
<neurology, physiology> Spontaneous extension of elbows, wrists and legs which suggests damage to the diencephalon (midbrain). ... Seen in cases of stroke and some cases of encephalitis. The decerebrate reflex is a clinical finding characterised by rigid contraction of the extensor and other muscles which maintain an animal in the standing pos …

decerebrate rigidity
<clinical sign, neurology> Spontaneous extension of elbows, wrists and legs which suggests damage to the diencephalon (midbrain). ... Seen in cases of stroke and some cases of encephalitis. The decerebrate reflex is a clinical finding characterised by rigid contraction of the extensor and other muscles which maintain an animal in the standing …

decerebrate state
A peculiar neurologic condition elicited in vertebrates as a consequence of the elimination of brain function by transecting the brainstem or interrupting function by other techniques. Clinically, brain damage can result in neurological signs resembling those of a decerebrate animal. The state consists of exaggerated postures, grossly abnormal refl …

decerebration
Spontaneous extension of elbows, wrists and legs which suggests damage to the diencephalon (midbrain). Seen in cases of stroke and some cases of encephalitis. The decerebrate reflex is a clinical finding characterised by rigid contraction of the extensor and other muscles which maintain an animal in the standing position (antigravity muscles), may …

decerebrise
To remove the brain. ... (05 Mar 2000) ...

dechloridation
Reduction of sodium chloride in the tissues and fluids of the body by reducing its intake or increasing its excretion. ... Synonym: dechlorination, dechloruration. ... (05 Mar 2000) ...

dechlorination
Synonym for dechloridation ... Reduction of sodium chloride in the tissues and fluids of the body by reducing its intake or increasing its excretion. ... Synonym: dechlorination, dechloruration. ... (05 Mar 2000) ...

dechloruration
Synonym for dechloridation ... Reduction of sodium chloride in the tissues and fluids of the body by reducing its intake or increasing its excretion. ... Synonym: dechlorination, dechloruration. ... (05 Mar 2000) ...

decholesterolization
Therapeutic reduction of the cholesterol concentration of the blood. ... (05 Mar 2000) ...

deci-
<prefix> Prefix used in the SI and metric systems to signify one-tenth (10--). ... Origin: L. Decimus, tenth ... (05 Mar 2000) ...

decibel
One-tenth of a bel; unit for expressing the relative loudness of sound on a logarithmic scale. ... Origin: L. Decimus, tenth, + bel ... (05 Mar 2000) ...

decibels
(dBa) A scale to measure sound levels. ... (05 Dec 1998) ...

decided
1. Free from ambiguity; unequivocal; unmistakable; unquestionable; clear; evident; as, a decided advantage. 'A more decided taste for science.' ... 2. Free from doubt or wavering; determined; of fixed purpose; fully settled; positive; resolute; as, a decided opinion or purpose. ... Synonym: Decided, Decisive. ... We call a thing decisive when it has t …

decidua basalis
The area of endometrium between the implanted chorionic vesicle and the myometrium, which develops into the maternal part of the placenta. ... Synonym: decidua serotina. ... Origin: L. Deciduus, falling off (qualifying membrana, membrane, understood) ... (05 Mar 2000) ...

decidua capsularis
The layer of endometrium overlying the implanted chorionic vesicle; it becomes progressively attenuated as the chorionic vesicle enlarges and, by the fourth month, is squeezed against the decidua parietalis and thereafter undergoes rapid regression. ... Synonym: decidua reflexa, membrana adventitia. ... (05 Mar 2000) ...

decidua menstrualis
The succulent mucous membrane of the nonpregnant uterus at the menstrual period. ... (05 Mar 2000) ...

decidua parietalis
The altered mucous membrane lining the main cavity of the pregnant uterus other than at the site of attachment of the chorionic vesicle. ... Synonym: decidua vera. ... (05 Mar 2000) ...

decidua polyposa
Decidua parietalis showing polypoid projections of the endometrial surface. ... (05 Mar 2000) ...

decidua reflexa
Synonym for decidua capsularis ... The layer of endometrium overlying the implanted chorionic vesicle; it becomes progressively attenuated as the chorionic vesicle enlarges and, by the fourth month, is squeezed against the decidua parietalis and thereafter undergoes rapid regression. ... Synonym: decidua reflexa, membrana adventitia. ... (05 Mar 2000) …

decidua serotina
Synonym for decidua basalis ... The area of endometrium between the implanted chorionic vesicle and the myometrium, which develops into the maternal part of the placenta. ... Synonym: decidua serotina. ... Origin: L. Deciduus, falling off (qualifying membrana, membrane, understood) ... (05 Mar 2000) ...

decidua spongiosa
The portion of the decidua basalis attached to the myometrium. ... (05 Mar 2000) ...

decidua vera
Synonym for decidua parietalis ... The altered mucous membrane lining the main cavity of the pregnant uterus other than at the site of attachment of the chorionic vesicle. ... Synonym: decidua vera. ... (05 Mar 2000) ...

decidual
Relating to the decidua. ... (05 Mar 2000) ...

decidual cast
A mold of the interior of the uterus formed of the exfoliated mucous membrane in cases of extrauterine gestation. ... (05 Mar 2000) ...

decidual cell
An enlarged, ovoid connective tissue cell appearing in the endometrium of pregnancy. ... (05 Mar 2000) ...

decidual fissure
A cleft in the decidua basalis or placenta. ... (05 Mar 2000) ...

decidual reaction
The cellular and vascular changes occurring in the endometrium at the time of implantation. ... (05 Mar 2000) ...

deciduate placenta
A placenta in which the maternal decidua is cast off with the foetal placenta. ... (05 Mar 2000) ...

deciduation
Shedding of endometrial tissue during menstruation. ... Origin: L. Deciduus, falling off ... (05 Mar 2000) ...

deciduitis
Inflammation of the decidua. ... (05 Mar 2000) ...

deciduous
<botany> Refers to a plant (usually a tree or shrub) that sheds its leaves at the end of the growing season ... (09 Oct 1997) ...

deciduous dentition
Synonym for deciduous tooth ... A tooth of the first set of teeth, comprising 20 in all, that erupts between the mean ages of 6 and 28 months of life. ... Synonym: dens deciduus, baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary tooth. ... (05 Mar 2000) ...

deciduous membrane
The mucous membrane of the pregnant uterus that has already undergone certain changes, under the influence of the ovulation cycle, to fit it for the implantation and nutrition of the ovum; so-called because the membrane is cast off after labour. ... Synonym: membrana decidua, caduca, decidua, Hunter's membrane. ... (05 Mar 2000) ...

deciduous skin
Synonym for keratolysis ... 1. Separation or loosening of the horny layer of the epidermis. ... 2. Specifically, a disease characterised by a shedding of the epidermis recurring at more or less regular intervals. ... Synonym: deciduous skin. ... Origin: kerato-+ G. Lysis, loosening ... (05 Mar 2000) ...

deciduous teeth
<dentistry> The primary, or baby teeth. ... (08 Jan 1998) ...

deciduous tooth
A tooth of the first set of teeth, comprising 20 in all, that erupts between the mean ages of 6 and 28 months of life. ... Synonym: dens deciduus, baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary tooth. ... (05 Mar 2000) ...

decigram
One-tenth of a gram. ... (05 Mar 2000) ...

deciliter
One-tenth of a liter. ... (05 Mar 2000) ...

decilitre
<unit> One-tenth of a litre. ... Abbreviation: dl ... (27 Sep 1997) ...

decimate
1. To take the tenth part of; to tithe. ... 2. To select by lot and punish with death every tenth man of; as, to decimate a regiment as a punishment for mutiny. ... 3. To destroy a considerable part of; as, to decimate an army in battle; to decimate a people by disease. ... Origin: L. Decimatus, p. P. Of decimare to decimate (in senses 1 & 2), fr. …

decimeter
One-tenth of a meter. ... (05 Mar 2000) ...

decimetre
<unit> One-tenth of a metre. ... Equivalent to 3.973 inches, 10 cm, or 0.1 m. ... (09 Oct 1997) ...

decimorgan
See: morgan. ... (05 Mar 2000) ...

decinormal
One-tenth of normal, denoting the concentration of a solution. ... (05 Mar 2000) ...

decision
1. Cutting off; division; detachment of a part. ... 2. The act of deciding; act of settling or terminating, as a controversy, by giving judgment on the matter at issue; determination, as of a question or doubt; settlement; conclusion. 'The decision of some dispute.' (Atterbury) ... 3. An account or report of a conclusion, especially of a legal adjudi …

decision analysis
A derivative of operations research and game theory that involves identifying all available choices and the potential outcomes of each, in a series of decisions that have to be made about patient care-diagnostic procedures, therapeutic regimens, prognostic expectations; the range of choices can be plotted on a decision tree. ... (05 Mar 2000) ...

decision making
The process of making a selective intellectual judgment when presented with several complex alternatives consisting of several variables, and usually defining a course of action or an idea. ... (12 Dec 1998) ...

decision making, computer-assisted
Use of an interactive computer system designed to assist the physician or other health professional in choosing between certain relationships or variables for the purpose of making a diagnostic or therapeutic decision. ... (12 Dec 1998) ...

decision making, organizational
The process by which decisions are made in an institution or other organization. ... (12 Dec 1998) ...

decision notice
The written record of a federal agency decision after an environmental assessment. The decision notice chooses one of the alternatives, or a blend of the alternatives. A decision notice is subject to appeal. ... (05 Dec 1998) ...

decision support systems, clinical
Computer-based information systems used to integrate clinical and patient information and provide support for decision-making in patient care. ... (12 Dec 1998) ...

decision support techniques
Mathematical or statistical procedures used as aids in making a decision. They are frequently used in medical decision-making. ... (12 Dec 1998) ...

decision theory
A theoretical technique utilizing a group of related constructs to describe or prescribe how individuals or groups of people choose a course of action when faced with several alternatives and a variable amount of knowledge about the determinants of the outcomes of those alternatives. ... (12 Dec 1998) ...

decision tree
Alternative choices available at each stage of deciding how to manage a clinical problem, displayed graphically; at each branch or decision node, the probabilities of each outcome that can be predicted are shown; the relative worth of each outcome is described in terms of its utility or quality of life, e.g., as measured by probability of life expe …

decision trees
A graphic device used in decision analysis, series of decision options are represented as branches (hierarchical). ... (12 Dec 1998) ...

decisive
1. Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive. 'A decisive, irrevocable doom.' Bates. 'Decisive campaign.' Macaulay. 'Decisive proof.' ... 2. Marked by promptness and decision. 'A noble instance of this attribute of the decisive character.' (J. Foster) ... Synonym: De …

deck
1. The floorlike covering of the horizontal sections, or compartments, of a ship. Small vessels have only one deck; larger ships have two or three decks. ... The following are the more common names of the decks of vessels having more than one. ... <astronomy> Berth deck, the upper deck, usually a light deck, erected above the frame of the hull. …

declamping phenomenon
Shock or hypotension following abrupt release of clamps from a large portion of the vascular bed, as from the aorta; apparently caused by transient pooling of blood in a previously ischemic area. ... Synonym: declamping shock. ... (05 Mar 2000) ...

declamping shock
Synonym for declamping phenomenon ... Shock or hypotension following abrupt release of clamps from a large portion of the vascular bed, as from the aorta; apparently caused by transient pooling of blood in a previously ischemic area. ... Synonym: declamping shock. ... (05 Mar 2000) ...

declinate
Bent downwards or forwards. ... (09 Oct 1997) ...

declination
1. The act or state of bending downward; inclination; as, declination of the head. ... 2. The act or state of falling off or declining from excellence or perfection; deterioration; decay; decline. 'The declination of monarchy.' 'Summer . . . Is not looked on as a time Of declination or decay.' (Waller) ... 3. The act of deviating or turning aside; ob …

declinator
A retractor that holds certain structures out of the way during an operation. ... (05 Mar 2000) ...

decline
1. A falling off; a tendency to a worse state; diminution or decay; deterioration; also, the period when a thing is tending toward extinction or a less perfect state; as, the decline of life; the decline of strength; the decline of virtue and religion. 'Their fathers lived in the decline of literature.' (Swift) ... 2. <medicine> That period of …

declive
The posterior sloping portion of the monticulus of the vermis of the cerebellum; vermal lobule caudal to the primary fissure. ... Synonym: declivis, lobulus clivi. ... Origin: L. Declivis, sloping downward, fr. Clivus, a slope ... (05 Mar 2000) ...

declivis
Synonym for declive ... The posterior sloping portion of the monticulus of the vermis of the cerebellum; vermal lobule caudal to the primary fissure. ... Synonym: declivis, lobulus clivi. ... Origin: L. Declivis, sloping downward, fr. Clivus, a slope ... (05 Mar 2000) ...