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


abducens eminence
Synonym for facial colliculus ... Prominent portion of the medial eminence, just rostral to the medullary striae in the rhomboidal fossa; it is formed by the internal genu of the facial nerve and the abducens nucleus around which the facial fibres curve. ... Synonym: colliculus facialis, abducens eminence, eminentia abducentis, eminentia facialis, fa …

abducens nerve
<anatomy, nerve> The 6th cranial nerve. The abducens nerve originates in the abducens nucleus of the pons and sends motor fibres to the lateral rectus muscles of the eye. Damage to the nerve or its nucleus disrupts horizontal eye movement control. ... (12 Dec 1998) ...

abducens nucleus
Nucleus of abducent nervenucleus abducentis, a group of motor neurons in the lower part of the pons, innervating the lateral rectus muscle of the eye; unique among motor cranial nerve nuclei in that it consists of two distinct populations of neurons: neurons that give rise to fibres forming the abducens nerve root and those internuclear neurons who …

abducens oculi
Synonym for lateral rectus ... <anatomy, muscle> Origin, lateral part of the common tendinous ring that bridges superior orbital fissure; insertion, lateral part of sclera of eye; action, abduction; nerve supply, abducens. ... Synonym: musculus rectus lateralis, abducens oculi, musculus rectus externus. ... (05 Mar 2000) ...

abducent
1. Abducting; drawing away, especially away from the median plane. ... Synonym: abducent nerve, abducens. ... Origin: L. Abducens ... (05 Mar 2000) ...

abducent nerve
<anatomy> The abducent nerve enervates a muscle which moves the eyeball. ... Lesions of the sixth cranial nerve result in deviation of the eyeball outward and double vision. ... Synonym: cranial nerve VI. ... (27 Sep 1997) ...

abduct
To move away from the median plane. ... Synonym: abduce. ... (05 Mar 2000) ...

abduction
<anatomy, neurology> Movement of the limbs toward the lateral plane or away from the body. ... (11 Mar 1998) ...

abductor
<anatomy, neurology> Muscles which move a portion of the body away from the midline such as raising the arm out from your side. ... (27 Sep 1997) ...

abductor hallucis
<anatomy, muscle> Origin, medial process of calcaneal tuberosity, flexor retinaculum, and plantar aponeurosis; insertion, medial side of proximal phalanx of great toe; action, abducts great toe; nerve supply, medial plantar. ... Synonym: musculus abductor hallucis, abductor muscle of great toe. ... (05 Mar 2000) ...

abductor muscle
<anatomy> Any muscle used to pull a body part away from the midline of the body. For example, the abductor leg muscles serve to spread the legs. The opposite of abductor is adductor. ... (12 Dec 1998) ...

abductor muscle of great toe
Synonym for abductor hallucis ... <anatomy, muscle> Origin, medial process of calcaneal tuberosity, flexor retinaculum, and plantar aponeurosis; insertion, medial side of proximal phalanx of great toe; action, abducts great toe; nerve supply, medial plantar. ... Synonym: musculus abductor hallucis, abductor muscle of great toe. ... (05 Mar 2000) …

abductor muscle of little finger
Synonym for abductor digiti minimi muscle of hand ... Origin, pisiform bone and pisohamate ligament; insertion, medial side of base of proximal phalanx of the little finger; action, abducts and flexes little finger; nerve supply, ulnar. ... Synonym: musculus abductor digiti minimi manus, abductor muscle of little finger, musculus abductor digiti quin …

abductor muscle of little toe
Synonym for abductor digiti minimi muscle of foot ... Origin, lateral and medial processes of calcanean tuberosity; insertion, lateral side of proximal phalanx of fifth toe; action, abducts and flexes little toe; nerve supply, lateral plantar nerve. ... Synonym: musculus abductor digiti minimi pedis, abductor muscle of little toe, musculus abductor d …

abductor pollicis brevis
<anatomy, muscle> Origin, tubercle of trapezium and flexor retinaculum; insertion, lateral side of proximal phalanx of thumb; action, abducts thumb; nerve supply, median. ... Synonym: musculus abductor pollicis brevis, short abductor muscle of thumb. ... (05 Mar 2000) ...

abductor pollicis longus
<anatomy> Origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial. ... Synonym: musculus abductor pollicis longus, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis. ... (05 Mar …

Abegg, Richard
<person> Danish chemist, 1869-1910. ... See: Abegg's rule. ... (05 Mar 2000) ...

Abegg's rule
The tendency of the sum of the maximum positive and maximum negative valence of a particular element to equal 8; e.g., C may have a valence of +4 and -4, O of +6 and -2. Sometimes loosely stated as all atoms have the same number of valences, a consequence of the tendency of valence electron shells to be filled to 8. ... (05 Mar 2000) ...

Abel, Rudolf
<person> German bacteriologist, 1868-1942. ... See: Abel's bacillus. ... (05 Mar 2000) ...

Abel's bacillus
Klebsiella pneumoniae subsp. Ozaenae ... See: Klebsiella ozaenae. ... (05 Mar 2000) ...

abele
The white polar (Populus alba). 'Six abeles i' the churchyard grow.' (Mrs. Browning) ... Origin: D. Abeel (abeel-boom), OF. Abel, aubel, fr. A dim. Of L. Albus white. ... Source: Websters Dictionary ... (01 Mar 1998) ...

Abell-Kendall method
A standard method for estimation of total serum cholesterol involving saponification of cholesterol ester by hydroxide, extraction with petroleum ether, and colour development with acetic anhydride-sulfuric acid; the method avoids interference by bilirubin, protein, and haemoglobin. ... (05 Mar 2000) ...

abelmosk
<botany> An evergreen shrub (Hibiscus formerly Abelmoschus-moschatus), of the East and West Indies and Northern Africa, whose musky seeds are used in perfumery and to flavor coffee; sometimes called musk mallow. ... Origin: NL. Abelmoschus, fr. Ar. Abu-l-misk father of musk, i.e, producing musk. See Musk. ... Source: Websters Dictionary ... (01 …

abelson leukaemia virus
A defective murine leukaemia virus capable of transforming lymphoid cells and producing a rapidly progressing lymphoid leukaemia after superinfection with friend, moloney, or rauscher virus. ... (12 Dec 1998) ...

Abelson murine leukaemia virus
A retrovirus belonging to the Type C retrovirus group subfamily (family Oncovirinae) which is associated with leukaemia and produces in vitro transformation of mouse cells. ... (05 Mar 2000) ...

Abelson, Herbert T
<person>U.S. Paediatrician, *1941. ... See: Abelson murine leukaemia virus. ... (05 Mar 2000) ...

abembryonic
The area of the blastocyst opposite the region where the embryo is formed. ... Origin: L. Ab, from, + embryonic ... (05 Mar 2000) ...

abenteric
A rarely used term meaning away from the intestine, said of a morbid process occurring elsewhere that would normally occur in the intestine. ... Origin: L. Ab, from, + G. Enteron, intestine ... (05 Mar 2000) ...

abequose synthase
<enzyme> Converts cdp-4-keto-3,6-dideoxy-d-glucose to cdp-3,6-dideoxy-d-galactose (cdp-abequose); requires NADPH, analogous to udp-glucose-4-epimerase ... Registry number: EC 5.1.3.- ... Synonym: rfbj gene product ... (26 Jun 1999) ...

abequosyltransferase
<enzyme> A dideoxyhexosyltransferase in salmonella enterica groups b and c2; partial amino acid sequence given in first source ... Registry number: EC 2.4.1.- ... Synonym: abequosyl transferase ... (26 Jun 1999) ...

Abernethy, John
<person> British surgeon and anatomist, 1764-1831. ... See: Abernethy's fascia. ... (05 Mar 2000) ...

Abernethy's fascia
A layer of subperitoneal areolar tissue in front of the external iliac artery. ... See: iliac fascia. ... (05 Mar 2000) ...

aberrancy
State of being aberrant; a wandering from the right way; deviation from truth, rectitude, etc. ... <geometry> Aberrancy of curvature, the deviation of a curve from a circular form. ... Source: Websters Dictionary ... (01 Mar 1998) ...

aberrant
Wandering or deviating from the usual or normal course. ... Origin: L. Aberrans ... (18 Nov 1997) ...

aberrant artery
Artery having an unusual origin or course. ... (05 Mar 2000) ...

aberrant bile ducts
Small duct's occasionally present in the ligaments of the liver or originating from the surface of the liver. ... (05 Mar 2000) ...

aberrant bundles
A group, or groups, of fibres from the corticobulbar or corticonuclear tract, directed to each of the motor nuclei of cranial nerves. ... (05 Mar 2000) ...

aberrant complex
An anomalous electrocardiographic complex, more specifically an abnormal ventricular complex caused by abnormal intraventricular conduction of a supraventricular impulse. ... (05 Mar 2000) ...

aberrant ducts
Synonym for aberrant ductules ... The superior or inferior diverticula of the epididymis. ... Synonym: ductuli aberrantes, aberrant ducts, ductus aberrantes, vasa aberrantes. ... (05 Mar 2000) ...

aberrant ductules
The superior or inferior diverticula of the epididymis. ... Synonym: ductuli aberrantes, aberrant ducts, ductus aberrantes, vasa aberrantes. ... (05 Mar 2000) ...

aberrant ganglion
A collection of nerve cells sometimes found on a posterior spinal nerve root between the spinal ganglion and the spinal cord. ... (05 Mar 2000) ...

aberrant goiter
Enlargement of a supernumerary thyroid gland. ... Synonym: struma aberrata. ... (05 Mar 2000) ...

aberrant haemoglobin
A mutant Hb that functions abnormally. ... Compare: variant haemoglobin. ... (05 Mar 2000) ...

aberrant obturator artery
See: pubic branch of inferior epigastric artery. ... (05 Mar 2000) ...

aberrant regeneration
Misdirected regrowth of nerve fibres seen for example, after oculomotor nerve injury. ... Synonym: misdirection phenomenon. ... (05 Mar 2000) ...

aberrant ventricular conduction
Abnormal intraventricular conduction of a supraventricular beat, especially where surrounding beats are normally conducted. ... Synonym: ventricular aberration. ... (05 Mar 2000) ...

aberrate
To go astray; to diverge. 'Their own defective and aberrating vision.' (De Quincey) ... Origin: L. Aberratus, p.pr. Of aberrare; ab + errare to wander. See Err. ... Source: Websters Dictionary ... (01 Mar 1998) ...

aberration
1. <ophthalmology> Any error that results in image degradation. Such errors may be chromatic, spherical, astigmatic chromatic, distortion, or curvature of field: and can result from design or execution, or both. ... 2. <physics> Failure of an optical or electron-optical lens to produce exact geometrical (and chromatic) correspondence bet …

aberration, chromatic
<optics> A defect in a lens or optical system due to the greater refraction of shorter wavelengths over that of loner ones at a lens surface. ... Hence the focal length of a simple lens is shorter for blue than for red rays. This dispersion of the wave-lengths will cause colour fringes in the image field of a lens with such an aberration. ... ( …

aberration, spherical
<optics> A lens defect whereby image forming rays of one colour, passing through the outer zones of a lens come to focus at a different distance from the lens than do those of more central rays. ... With a simple spherical (or plano-spherical) lens the outer rays always meet the axis closer to the lens than do more central rays and the lens is …

aberrometer
An instrument for measuring optical aberration or any error in experimentation. ... Origin: L. Aberratio, aberration, + G. Metron, measure ... (05 Mar 2000) ...

abetalipoproteinaemia
<biochemistry, disease> A rare congenital disorder that causes the body to not produce chylomicrons, low density lipoprotein (LDL) and very low density lipoprotein (VLDL). Individuals with this condition are unable to properly digest fats. ... Other findings include ataxia, peripheral neuropathy and other forms of nerve dysfunction. ... Treatme …

abevacuation
<medicine> A partial evacuation. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abeyance
A state of temporary abolition of function. ... Origin: fr. O. Fr. ... (05 Mar 2000) ...

abfarad
Electromagnetic unit of capacity equal to 109 farads. ... (05 Mar 2000) ...

ABG
Synonym for arterial blood gas ... A test which analyses arterial blood for oxygen, carbon dioxide and bicarbonate content in addition to blood pH. Used to test the effectiveness of respiration. ... Acronym: ABG ... (17 Oct 1997) ...

abhenry
Electromagnetic unit of inductance equal to 10-9 henry. ... (05 Mar 2000) ...

abhorrent
1. Abhorring; detesting; having or showing abhorrence; loathing; hence, strongly opposed to; as, abhorrent thoughts. 'The persons most abhorrent from blood and treason.' (Burke) 'The arts of pleasure in despotic courts I spurn abhorrent.' (Clover) ... 2. Contrary or repugnant; discordant; inconsistent; followed by to. 'Injudicious profanation, so ab …

abient
Having a tendency to move away from the source of a stimulus, as opposed to adient. ... Origin: L. Abiens, fr. Ab-eo, to go from ... (05 Mar 2000) ...

abies
<botany> A genus of coniferous trees, properly called Fir, as the balsam fir and the silver fir. The spruces are sometimes also referred to this genus. ... Origin: L, fir tree. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abietadiene cyclase
<enzyme> Converts geranylgeranyl pyrophosphate to (-)-abieta-7(8),13(14)-diene; from lodgepole pine or grand fir ... Registry number: EC 5.- ... Synonym: abietadiene synthase ... (26 Jun 1999) ...

abietene
<chemistry> A volatile oil distilled from the resin or balsam of the nut pine (Pinus sabiniana) of California. ... Origin: L. Abies, abietis, a fir tree. ... (11 Mar 1998) ...

abietic
<botany> Of or pertaining to the fir tree or its products; as, abietic acid, ... Synonym: sylvic acid. ... (11 Mar 1998) ...

abietine
<chemistry> A resinous obtained from Strasburg turpentine or Canada balsam. It is without taste or smell, is insoluble in water, but soluble in alcohol (especially at the boiling point), in strong acetic acid, and in ether. ... See: Abietene. ... (11 Mar 1998) ...

abietinic
<chemistry> Of or pertaining to abietin; as, abietinic acid. ... (11 Mar 1998) ...

abietite
<chemistry> A substance resembling mannite, found in the needles of the common silver fir of Europe (Abies pectinata). ... Source: Websters Dictionary ... (01 Mar 1998) ...

ability
The quality or state of being able; power to perform, whether physical, moral, intellectual, conventional, or legal; capacity; skill or competence in doing; sufficiency of strength, skill, resources, etc.; in the plural, faculty, talent. 'Then the disciples, every man according to his ability, determined to send relief unto the brethren.' (Acts xi. …

abiogenesis
<study> The scientific study of how life originally arose on the planet, presumably from nonliving things and the presence of nonliving organic matter. ... (09 Oct 1997) ...

abiogenetic
<biology> Of or pertaining to abiogenesis. ... (11 Mar 1998) ...

abiogenic
<biology> Refers to things not involved with or produced by living organisms. ... Origin: Gr. Gennan = to produce ... (06 May 1997) ...

abiogenist
<biology> One who believes that life can be produced independently of antecedent. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abiogenous
<biology> Produced by spontaneous generation. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abiogeny
Synonym for abiogenesis ... <study> The scientific study of how life originally arose on the planet, presumably from nonliving things and the presence of nonliving organic matter. ... (09 Oct 1997) ...

abiological
Pertaining to the study of inanimate things. ... (11 Mar 1998) ...

abioseston
<biology> A general term for dead organic material floating suspended in ocean water. ... (06 May 1997) ...

abiotic
<biology> Refers to nonliving objects, substances or processes. ... (06 May 1997) ...

abiotic stress
<botany> Nonliving environmental factors (such as drought, extreme cold or heat, high winds) that can have harmful effects on plants. ... (06 May 1997) ...

abiotic transformation
<biochemistry> An abiotic transformation is any process in which a chemical in the environment is altered by non-biological mechanisms (such as by exposure to sunlight). ... (09 Oct 1997) ...

abiotrophy
<biology> Premature loss of a cell or tissues ability to function. ... (06 May 1997) ...

abirritant
<pharmacology> A medicine that diminishes irritation. ... (11 Mar 1998) ...

abirritate
<medicine> To diminish the sensibility of; to debilitate. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abirritation
<medicine> A pathological condition opposite to that of irritation; debility; want of strength; asthenia. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abirritative
<medicine> Characterised by abirritation or debility. ... Source: Websters Dictionary ... (01 Mar 1998) ...

abl
<bacteria> A gram-negative, rod shaped flagellated bacterium responsible for crown gall tumour in plants. Following infection the T1 plasmid from the bacterium becomes integrated into the host plant's DNA and the presence of the bacterium is no longer necessary for the continued growth of the tumour. ... (18 Nov 1997) ...

ablactation
1. <zoology> The weaning of a child from the breast, or of young beasts from their dam. ... 2. <botany> The process of grafting now called inarching, or grafting by approach. ... (11 Mar 1998) ...

ablaqueate
<botany> To lay bare, as the roots of a tree. ... Origin: L. Ablaqueatus, p. P. Of. Ablaqueare; fr. Ab + laqueus a noose. ... (11 Mar 1998) ...

ablaqueation
<technique> The act or process of laying bare the roots of trees to expose them to the air and water. ... Origin: L. Ablaqueatio. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablastemic
<biology> Non-germinal. ... Origin: Gr. Priv. + growth. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablastin
An antibody that seems to inhibit reproduction of trypanosomes; found in rats infected with Trypanosoma lewisi. ... Origin: G. A-priv. + blastos, germ ... (05 Mar 2000) ...

ablate
To remove, usually by cutting. at surgery a tumour may be ablated. ... (12 Dec 1998) ...

ablatio placentae
Synonym for abruptio placentae ... <obstetrics> This is the premature separation of the placenta, i.e. Separation of the placenta from the site of implantation on the uterus before the delivery of the foetus. It is a life threatening condition for the foetus and occurs about 1 in 500 to 750 deliveries. ... (09 Oct 1997) ...

ablation
1. A carrying or taking away; removal. ... 2. <medicine> Extirpation. ... 3. <geology> Wearing away; superficial waste. ... See: tolerate. ... Origin: L. Ablatio, fr. Ablatus p. P. Of auferre to carry away; ab + latus, p. P. Of ferre carry: cf. F. Ablation. ... (11 Mar 1998) ...

ablative
1. Taking away or removing. 'Where the heart is forestalled with misopinion, ablative directions are found needful to unteach error, ere we can learn truth.' (Bp. Hall) ... 2. Applied to one of the cases of the noun in Latin and some other languages, the fundamental meaning of the case being removal, separation, or taking away. ... See: ablation. ... …

able-bodied
Having a sound, strong body; physically competent; robust. 'Able-bodied vagrant.' ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablegate
A representative of the pope charged with important commissions in foreign countries, one of his duties being to bring to a newly named cardinal his insignia of office. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablen
<zoology> A small fresh water fish (Leuciscus alburnus); the bleak. ... Origin: F. Ablet, ablette, a dim. Fr. LL. Abula, for albula, dim. Of albus white. Cf. Abele. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablepharia
Congenital absence, partial or complete, of the eyelids; recessive inheritance. ... See: cryptophthalmus. ... Origin: G. A-priv. + blepharon, eyelid ... (05 Mar 2000) ...

abluent
Washing away; carrying off impurities; detergent. ... <medicine> A detergent. ... Origin: L. Abluens, p. Pr. Of. Abluere to wash away; ab + luere (lavere, lavare). See Lave. ... Source: Websters Dictionary ... (01 Mar 1998) ...

ablution
1. The act of washing or cleansing; specifically, the washing of the body, or some part of it, as a religious rite. ... 2. The water used in cleansing. 'Cast the ablutions in the main.' ... 3. A small quantity of wine and water, which is used to wash the priest's thumb and index finger after the communion, and which then, as perhaps containing portio …

ablutomania
<psychiatry> Rarely used term for a morbid preoccupation with thoughts about cleanliness, exhibited by frequent washing, as seen in obsessive-compulsive disorder. ... Origin: L. Ablutio, washing, + G. Mania, insanity ... (05 Mar 2000) ...