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

FIV protease
<enzyme> 116 amino acids; an intermediate between hiv (99 amino acids and rsv (124 amino acids) proteinases; amino acid sequence given in first source ... Registry number: EC 3.4.23.- ... Synonym: proteinase, feline immunodeficiency virus, fiv pr ... (26 Jun 1999) ...

five
Four and one added; one more than four. ... <ethnology> Five nations, a confederacy of the Huron-Iroquois Indians, consisting of five tribes: Mohawks, Onondagas, Cayugas, Oneidas, and Senecas. They inhabited the region which is now the State of new York. ... Origin: OE. Fif, five, AS. Fif, fife; akin to D. Vijf, OS. Fif, OHG. Finf, funf, G. Fun …

five year survival rate
The proportion of patients still alive five years after a diagnosis or form of treatment is completed. Usually applied to statistics of survival of cancer patients, since after five years, recurrences are much less likely to occur. ... (05 Mar 2000) ...

five-day fever
See Fever, trench. ... (12 Dec 1998) ...

fix
1. To make firm, stable, or fast; to set or place permanently; to fasten immovably; to establish; to implant; to secure; to make efinite. 'An ass's nole I fixed on his head.' (Shak) 'O, fix thy chair of grace, that all my powers May also fix their reverence.' (Herbert) 'His heart is fixed, trusting in the Lord.' (Ps. Cxii. 7) 'And fix far deeper in …

fixation
1. <orthopaedics> The act or operation of holding, suturing or fastening in a fixed position. The condition of being held in a fixed position. ... 2. <psychiatry> A term with two related but distinct meanings: 1. Arrest of development at a particular stage, which like regression (return to an earlier stage), if temporary is a normal reac …

fixation disparity
The amount of heterophoria possible with fusion present. ... (05 Mar 2000) ...

fixation nystagmus
Nystagmus aggravated or induced by ocular fixation, arising as optokinetic nystagmus, or resulting from midbrain lesions. ... (05 Mar 2000) ...

fixation reaction
Synonym for complement fixation ... <immunology> Binding of complement as a result of its interaction with immune complexes (the classical pathway) or particular surfaces (alternative pathway). ... (18 Nov 1997) ...

fixation, ocular
The direction of the gaze so that the visual image of the object falls on the fovea centralis of the retina, the area of the most acute vision. ... (12 Dec 1998) ...

fixational ocular movement
Rotation of the eyes during voluntary fixation on an object; tremors, flicks, and drifts occur. ... (05 Mar 2000) ...

fixative
1. Serving to fix, bind, or make firm or stable. ... 2. A substance used for the preservation of gross and histologic specimens of tissue, or individual cells, usually by denaturing and precipitating or cross-linking the protein constituents. ... See: fluid, solution. ... (05 Mar 2000) ...

fixatives
Agents employed in the preparation of histologic or pathologic specimens for the purpose of maintaining the existing form and structure of all of the constituent elements. Great numbers of different agents are used; some are also decalcifying and hardening agents. They must quickly kill and coagulate living tissue. ... (12 Dec 1998) ...

fixator
A device providing rigid immobilization through external skeletal fixation by means of rods (f.'s) attached to pins which are placed in or through the bone. ... (05 Mar 2000) ...

fixator muscle
<anatomy> A muscle that acts as a stabiliser of one part of the body during movement of another part. ... (05 Mar 2000) ...

fixed
1. Securely placed or fastened; settled; established; firm; imovable; unalterable. ... 2. <chemistry> Stable; non-volatile. ... <chemistry> Fixed air, the fixed point about which any line of troops wheels. ... <astronomy> Fixed stars, such stars as always retain nearly the same apparent position and distance with respect to each othe …

fixed alkali
Any alkali other than a weakly ionised one, like ammonia. ... (05 Mar 2000) ...

fixed alkaloid
A nonvolatile alkaloid. ... (05 Mar 2000) ...

fixed appliance
<dentistry> Any orthodontic component that is cemented or bonded to the teeth. ... (08 Jan 1998) ...

fixed bridge
Synonym for fixed partial denture ... A restoration of one or more missing teeth which cannot be readily removed by the patient or dentist; it is permanently attached to natural teeth or roots which furnish the primary support to the appliance. ... Synonym: bridge. ... (05 Mar 2000) ...

fixed contracture
Synonym for organic contracture ... Contracture, usually due to fibrosis within the muscle that persists whether the subject is conscious or unconscious. ... Synonym: fixed contracture. ... (05 Mar 2000) ...

fixed coupling
Where several premature beats are seen, the interval between each of them and the preceding normal beat is constant. ... Synonym: constant coupling. ... Variable coupling, where several extrasystoles are seen, the interval between each of them and the preceding sinus beat varies. ... (05 Mar 2000) ...

fixed dressing
A dressing stiffened with a substance that produces immobilization when it dries. ... (05 Mar 2000) ...

fixed drug eruption
A type of drug eruption that recurs at a fixed site (or sites) following the administration of a particular drug; the lesions usually consist of intensely erythematous and purplish, sharply demarcated macules, and occasionally of herpetic vesicles; the affected areas undergo gradual involution, but flare and enlarge on readministration of the offen …

fixed idea
An exaggerated notion, belief, or delusion that persists, despite evidence to the contrary, and controls the mind, the obstinate conviction of a psychotic person regarding the correctness of his delusion. ... Synonym: idee fixe, overvalued idea, permanent dominant idea. ... (05 Mar 2000) ...

fixed macrophage
A relatively immotile macrophage found in connective tissue, lymph nodes, spleen, and bone marrow. ... Synonym: resting wandering cell. ... (05 Mar 2000) ...

fixed oil
Synonym for fatty oil ... An oil derived from both animals and plants; chemically, a glyceride of a fatty acid which, by substitution of the glycerine by an alkaline base, is converted into a soap; a fatty oil, in contrast to a volatile oil, is permanent, leaving a stain on an absorbent surface, and thus is not capable of distillation; it is obtaine …

fixed partial denture
A restoration of one or more missing teeth which cannot be readily removed by the patient or dentist; it is permanently attached to natural teeth or roots which furnish the primary support to the appliance. ... Synonym: bridge. ... (05 Mar 2000) ...

fixed pupil
A stationary pupil unresponsive to all stimuli. ... (05 Mar 2000) ...

fixed rate pulse generator
Synonym for asynchronous pulse generator ... A generator in which the rate of discharge is independent of the natural activity of the heart. ... Synonym: fixed rate pulse generator. ... (05 Mar 2000) ...

fixed torticollis
Persistent contracture of cervical muscles on one side. ... (05 Mar 2000) ...

fixed virus
Rabies virus whose virulence for rabbits has been stabilised by numerous passages through this experimental host. ... See: street virus. ... (05 Mar 2000) ...

fixed-rate pacemaker
An artificial pacemaker that emits electrical stimuli at a constant frequency. ... (05 Mar 2000) ...

fixing
Synonym for fixation ... 1. <orthopaedics> The act or operation of holding, suturing or fastening in a fixed position. The condition of being held in a fixed position. ... 2. <psychiatry> A term with two related but distinct meanings: 1. Arrest of development at a particular stage, which like regression (return to an earlier stage), if te …

fixing eye
The eye, in cases of strabismus, that is directed toward the object of regard. ... (05 Mar 2000) ...

fk 33-824
<chemical> Stable, synthetic analog of methionine enkephalin (enkephalin, methionine). Actions are similar to those of methionine enkephalin. Its effects can be reversed by narcotic antagonists such as naloxone. ... Chemical name: L-Phenylalaninamide, L-tyrosyl-D-alanylglycyl-N-(1-(hydroxymethyl)-3-(methylsulfinyl)propyl)-Nalpha-methyl-, (1S)- …

FK506 methyltransferase
<enzyme> Involved in synthesis of fk-506 ... Registry number: EC 2.1.1.- ... Synonym: 31-o-desmethyl-fk506 - o-methyltransferase, fk-506 methyltransferase ... (26 Jun 1999) ...

FK520 methyltransferase
<enzyme> Involved in biosynthesis of fk-520 (immunomycin) ... Registry number: EC 2.1.1.- ... Synonym: 31-o-desmethylimmunomycin - o-methyltransferase, fk-520 methyltransferase, immunomycin methyltransferase ... (26 Jun 1999) ...

fla 63
<chemical> Bis[(3-methyl-1-imidazolidinyl)thiocarbonyl]disulfide. An inhibitor of the last step of noradrenaline biosynthesis. Synonym: bis(4-methyl-1-homopiperazinyl)thiuram disulfide. ... Chemical name: 1H-1,4-Diazepine, 1,1'-(dithiodicarbonothioyl)bis(hexahydro-4-methyl- ... (12 Dec 1998) ...

flabellate
Fan-shaped. ... (09 Oct 1997) ...

flaccid
Weak, lax and soft. ... Origin: L. Flaccidus ... (18 Nov 1997) ...

flaccid ectropion
Synonym for atonic ectropion ... Ectropion of the lower eyelid following paralysis of the orbicularis oculi muscle. ... Synonym: flaccid ectropion, paralytic ectropion. ... (05 Mar 2000) ...

flaccid membrane
Synonym for flaccid part of tympanic membrane ... Triangular loose part of tympanic membrane between the malleolar folds. ... Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. ... (05 Mar 2000) ...

flaccid paralysis
Paralysis with a loss of muscle tone. ... Compare: spastic diplegia. ... (05 Mar 2000) ...

flaccid part of tympanic membrane
Triangular loose part of tympanic membrane between the malleolar folds. ... Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. ... (05 Mar 2000) ...

flaccidity
The condition or state of being flaccid. ... (05 Mar 2000) ...

Flack, Martin
<person> British physiologist, 1882-1931. ... See: Flack's node, Keith and Flack node. ... (05 Mar 2000) ...

Flack's node
Synonym for sinuatrial node ... sinoatrial node ...

flag
1. That which flags or hangs down loosely. ... 2. A cloth usually bearing a device or devices and used to indicate nationality, party, etc, or to give or ask information; commonly attached to a staff to be waved by the wind; a standard; a banner; an ensign; the colours; as, the national flag; a military or a naval flag. ... 3. <zoology> A group …

flag flap
A flag-shaped flap on a proximal pedicle, transferred from one surface to another of the same finger or from one finger to an adjacent finger. ... (05 Mar 2000) ...

flag sign
<clinical sign> Bands of discoloration of hair (reddish, blonde, or gray, depending on original colour) resulting from fluctuations in nutrition characteristic of kwashiorkor and in diseases of protein depletion such as ulcerative colitis. ... (05 Mar 2000) ...

flagella
In bacteria, a whiplike motility appendage present on the surface of some species. Flagella are composed of a protein called flagellin. Bacteria can have a single flagellum, a tuft at one pole, or multiple flagella covering the entire surface. In eukaryotes, flagella are threadlike protoplasmic extensions used to propel flagellates and sperm. Flage …

flagellar
Relating to a flagellum or to the extremity of a protozoan. ... (05 Mar 2000) ...

flagellar agglutinin
Synonym for H agglutinin ... An agglutinin that is formed as the result of stimulation by, and which reacts with, the thermolabile antigen(s) in the flagella of motile strains of microorganisms. ... Synonym: flagellar agglutinin. ... See ABO blood group. ... (05 Mar 2000) ...

flagellar antigen
The heat-labile antigen's associated with bacterial flagella, in contrast to somatic antigen. ... See: H antigen. ... (05 Mar 2000) ...

flagellate diarrhoea
Diarrhoea due to infection with flagellate Giardia lamblia. ... (05 Mar 2000) ...

flagellated
Possessing one or more flagella. ... (05 Mar 2000) ...

flagellin
<protein> Subunit protein (40 kD) of the bacterial flagellum. ... (18 Nov 1997) ...

flagellin N-methylase
<enzyme> N-methylates select lysine residues of flagellin; flib isolated from salmonella typhimurium; genbank z54217 ... Registry number: EC 2.1.1.- ... Synonym: nml gene product, flib gene product ... (26 Jun 1999) ...

flagellosis
Infection with flagellated protozoa in the intestinal or genital tract, e.g., trichomoniasis. ... (05 Mar 2000) ...

flagellum
<cell biology> Long thin projection from a cell used in movement. ... In eukaryotes flagella (like cilia) have a characteristic axial 9+2 microtubular array (axoneme) and bends are generated along the length of the flagellum by restricted sliding of the nine outer doublets. ... In prokaryotes the flagellum is made of polymerised flagellin and i …

flageolet
A small wooden pipe, having six or more holes, and a mouthpiece inserted at one end. It produces a shrill sound, softer than of the piccolo flute, and is said to have superseded the old recorder. Flageolet tones, the naturel harmonics or overtones of stringed instruments. ... Origin: F. Flageolet, dim. Of OF. Flajl (as if fr. A LL. Flautio;us), of f …

flail
1. An instrument for threshing or beating grain from the ear by hand, consisting of a wooden staff or handle, at the end of which a stouter and shorter pole or club, called a swipe, is so hung as to swing freely. 'His shadowy flail hath threshed the corn.' (Milton) ... 2. An ancient military weapon, like the common flail, often having the striking p …

flail chest
<orthopaedics> An unstable chest wall after fractures of the sternum and/or ribs. ... (27 Sep 1997) ...

flail joint
A joint with loss of function caused by loss of ability to stabilise the joint in any plane within its normal range of motion. ... (05 Mar 2000) ...

flake
1. A paling; a hurdle. ... 2. A platform of hurdles, or small sticks made fast or interwoven, supported by stanchions, for drying codfish and other things. 'You shall also, after they be ripe, neither suffer them to have straw nor fern under them, but lay them either upon some smooth table, boards, or flakes of wands, and they will last the longer.' …

flame
1. A stream of burning vapor or gas, emitting light and heat; darting or streaming fire; a blaze; a fire. ... 2. Burning zeal or passion; elevated and noble enthusiasm; glowing imagination; passionate excitement or anger. 'In a flame of zeal severe.' 'Where flames refin'd in breasts seraphic glow.' (Pope) 'Smit with the love of sister arts we came, …

flame arc
An arc between two impregnated electrodes that causes volatilization of the core with resultant flame. ... (05 Mar 2000) ...

flame emission spectrophotometry
Determination of the concentration of an element by measurement of light emitted when the element is excited by energy in the form of heat. ... (05 Mar 2000) ...

flame figure
A small area of dermal or subcutaneous necrosis with intense eosinophil staining of collagen bundles; seen in the lesions of Well's syndrome. ... (05 Mar 2000) ...

flame ionisation detector
<apparatus> A piece of equipment used in gas chromatography that uses a flame to decompose the neutral solute molecules into charged particles, then measures any changes in conductivity. ... (09 Oct 1997) ...

flame ionization
Pyrolysis of organic compounds at the temperature of a hydrogen-air flame to produce ionic intermediates which can be collected and the resulting ion current measured by gas chromatography. ... (12 Dec 1998) ...

flame retardants
Materials applied to fabrics, bedding, furniture, plastics, etc. To retard their burning; many may leach out and cause allergies or other harm. ... (12 Dec 1998) ...

flame spots
Haemorrhagic areas occurring in the nerve fibre layer of the retina. ... (05 Mar 2000) ...

flamingo
Origin: Sp. Flamenco, cf. Pg. Flamingo, Prov. Flammant, F. Flamant; prop. A p.pr. Meaning flaming. So called in allusion to its colour. See Flame. ... <zoology> Any bird of the genus Phoenicopterus. The flamingoes have webbed feet, very long legs, and a beak bent down as if broken. Their colour is usually red or pink. The American flamingo is …

flammable
The property of burning readily and quickly. ... Synonym: inflammable. ... Origin: L. Flamma, flame ... (05 Mar 2000) ...

flammable anaesthetic
An inhalation anaesthetic that supports combustion and forms explosive mixtures with oxidizing gases. ... (05 Mar 2000) ...

flange
That part of the denture base which extends from the cervical ends of the teeth to the border of the denture. ... (05 Mar 2000) ...

flange contour
The design of the flange of a denture. ... (05 Mar 2000) ...

flank
<anatomy> The posterior part of the body below the ribs abd above the ilium (upper portion of the pelvis). ... (27 Sep 1997) ...

flank bone
Synonym for ilium ... <anatomy> The upper and largest, part of the bony pelvic girdle (iliac wing). The ilium articulates on its inner aspect with the sacrum (sacroiliac joint). ... (27 Sep 1997) ...

flank incision
An incision usually made near and parallel to the twelfth rib between the iliac crest on the lower side and the ribs on the upper. ... (05 Mar 2000) ...

flank position
A lateral recumbent position, but with the lower leg flexed, the upper leg extended, and convex extension of the upper side of the body; used for nephrectomy. ... (05 Mar 2000) ...

flanking region
<molecular biology> The DNA sequences extending on either side of a specific locus or gene. ... (09 Oct 1997) ...

flanking sequence
<molecular biology> Short DNA sequences bordering a transcription unit. Often these do not code for proteins. ... (18 Nov 1997) ...

flap
Anything broad and limber that hangs loose, or that is attached by one side or end and is easily moved; as, the flap of a garment. 'A cartilaginous flap upon the opening of the larynx.' (Sir T. Browne) ... 2. A hinged leaf, as of a table or shutter. ... 3. The motion of anything broad and loose, or a stroke or sound made with it; as, the flap of a sa …

flap amputation
An amputation in which flaps of the muscular and cutaneous tissues are made to cover the end of the bone. ... Synonym: flap operation. ... (05 Mar 2000) ...

flap gate
<ecology, equipment> A device which allows water to flow in only one direction through a culvert, can be used to allow water to drain out of a wetland during low tide while preventing water from entering the wetland during high tide. ... (09 Oct 1997) ...

flap operation
Synonym for flap amputation ... An amputation in which flaps of the muscular and cutaneous tissues are made to cover the end of the bone. ... Synonym: flap operation. ... (05 Mar 2000) ...

flapless amputation
An amputation without any tissue to cover the stump ... (05 Mar 2000) ...

flapping tremor
Synonym for asterixis ... <clinical sign, neurology> Abnormal muscle tremor consisting of involuntary jerking of the hands. May be seen in liver disease. ... (27 Sep 1997) ...

flare
<microscopy> Unwanted light in an optical instrument that arises by reflection at lens surfaces (including the observer's eyeglasses) and lens barrel, etc., and sometimes from lens aberration. ... Flare reduces image contrast and may form undesirable focused images and hot spots. Flare in a microscope is reduced by immersion of the condenser a …

flare streaming
<cell biology> Phenomenon described in isolated cytoplasm of giant amoeba when the medium contains Ca and ATP. A loop of cytoplasm flows outward and then returns to the main mass the appearance is reminiscent of flares around the eclipsed sun. ... (18 Nov 1997) ...

flared teeth
<dentistry> A term used to indicate the position of the teeth. The upper teeth are flared lingually (toward the lip). ... (08 Jan 1998) ...

flarimeter
An obsolete device for use in evaluating cardiopulmonary fitness; pulse rate and blood pressure were measured during attempts to expire the vital capacity through calibrated orifices while maintaining a mouth pressure of 20 mm Hg. ... Origin: L. Flare, to blow, + G. Metron, measure ... (05 Mar 2000) ...

flash
1. A pool. ... 2. <engineering> A reservoir and sluiceway beside a navigable stream, just above a shoal, so that the stream may pour in water as boats pass, and thus bear them over the shoal. ... <mechanics> Flash wheel, a paddle wheel made to revolve in a breast or curved water way, by which water is lifted from the lower to the higher l …

flash blindness
A temporary loss of vision produced when retinal light-sensitive pigments are bleached by light more intense than that to which the retina is physiologically adapted at that moment. ... (05 Mar 2000) ...

flash burn
A burn due to very brief exposure to intense radiant heat; the typical burn produced by atomic explosion. ... (05 Mar 2000) ...

flash dispersal
The property of rapid disintegration of a tablet when placed on the tongue. ... (05 Mar 2000) ...

flash evaporator
<apparatus> An apparatus used to concentrate a solute by evaporating its solvent. The device is fairly simple: a heated, rotating glass sphere with an exhaust tube to let the solvent fumes to escape. ... (09 Oct 1997) ...