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


siliqua
A dry, dehiscent fruit formed from a superior ovary of two carpels, with two parietal placentas and divided into two loculi by a false septum between the placentas. ... (09 Oct 1997) ...

siliqua olivae
The arcuate fibres, which appear to encircle the inferior olive in the medulla oblongata. ... Origin: L. The husk of the olive ... (05 Mar 2000) ...

silique
The long, narrow pod of plants of the mustard family, Cruciferae, with valves which fall away from a frame bearing the seeds. ... (09 Oct 1997) ...

silk
1. The fine, soft thread produced by various species of caterpillars in forming the cocoons within which the worm is inclosed during the pupa state, especially that produced by the larvae of Bombyx mori. ... 2. Hence, thread spun, or cloth woven, from the above-named material. ... 3. That which resembles silk, as the filiform styles of the female flo …

silkworm
<zoology> The larva of any one of numerous species of bombycid moths, which spins a large amount of strong silk in constructing its cocoon before changing to a pupa. ... The common species (Bombyx mori) feeds onm the leaves of the white mulberry tree. It is native of China, but has long been introduced into other countries of Asia and Europe, …

silkworms
Moths of the family bombycidae of the order lepidoptera, called silkworm moths. The family contains a single species, bombyx mori from the greek for silkworm + mulberry tree (on which it feeds). A native of asia, it is sometimes reared in this country. It has long been raised for its silk and after centuries of domestication it probably does not ex …

silky
1. Of or pertaining to silk; made of, or resembling, silk; silken; silklike; as, a silky luster. ... 2. Hence, soft and smooth; as, silky wine. ... 3. Covered with soft hairs pressed close to the surface, as a leaf; sericeous. ... <botany> Silky oak, a lofty Australian tree (Grevillea robusta) with silky tomentose lobed or incised leaves. It fur …

silly
1. Happy; fortunate; blessed. ... 2. Harmless; innocent; inoffensive. 'This silly, innocent Custance.' 'The silly virgin strove him to withstand.' (Spenser) 'A silly, innocent hare murdered of a dog.' (Robynson (More's Utopia)) ... 3. Weak; helpless; frail. 'After long storms . . . With which my silly bark was tossed sore.' (Spenser) 'The silly bucke …

silo-filler's disease
<chest medicine> A pneumonia or bronchiolitis caused by inhalation of nitrogen dioxide released by fresh silage. ... In its acute form it can cause death due to pulmonary oedema, often delayed for 1-4 hours after exposure. ... It can also produce a subacute or chronic proliferative pulmonary disease or bronchiolitis obliterans. ... (08 Aug 2003) …

silo-filler's lung
Synonym for silo-filler's disease ... <chest medicine> A pneumonia or bronchiolitis caused by inhalation of nitrogen dioxide released by fresh silage. ... In its acute form it can cause death due to pulmonary oedema, often delayed for 1-4 hours after exposure. ... It can also produce a subacute or chronic proliferative pulmonary disease or bronc …

siloxanes
<chemistry> Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures. ... (12 Dec 1998) ...

silt
Particles in siliciclastic sediment that range in size from 0.0039 millimetres (very fine silt) to 0.0625 millimetres (coarse silt), according to the Udden-Wentworth scale. In field geology, a mudrock has silt in it if it feels smooth to the fingers but tastes gritty between the teeth.Silt and clay are collectively classified as mud. ... (09 Oct 199 …

Silteplase
<chemical> ... Pharmacological action: fibrinolytic agents ... (26 Jun 1999) ...

silurian
<geology> Of or pertaining to the country of the ancient Silures; a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly developed in that country. ... The Silurian formation, so named by Murchison, is divided into the Upper Silurian and Lower Silurian. The lower part of the Lower Silurian …

silvan
Of or pertaining to woods; composed of woods or groves; woody. ... Alternative forms: sylvan] 'Betwixt two rows of rocks, a silvan scene Appears above, and groves forever green.' (Dryden) ... Origin: L. Silva, less correctly sylva, a wood or grove, perh. Akin to Gr. 'ylh; cf. L. Silvanus Silvanus the god of woods: cf. F. Sylvain silvan. Cf. Savage.
silver
1. <chemistry, element> A soft white metallic element, sonorous, ductile, very malleable, and capable of a high degree of polish. It is found native, and also combined with sulphur, arsenic, antimony, chlorine, etc, in the minerals argentite, proustite, pyrargyrite, ceragyrite, etc. Silver is one of the 'noble' metals, so-called, not being ea …

silver cell
One of a number of cells seen in plaques of multiple sclerosis, having round or oval nuclei, the body of the cell containing many yellow or light brown particles; the cells are characteristic of multiple sclerosis, but are found in other conditions, including syphilis. ... (05 Mar 2000) ...

silver chloride
Used in the preparation of antiseptic silver preparations. ... (05 Mar 2000) ...

silver compounds
Inorganic compounds that contain silver as an integral part of the molecule. ... (12 Dec 1998) ...

silver cone
Pure silver cone with standard conical shape, used with cement to obturate dental root canals. ... (05 Mar 2000) ...

silver fluoride
AgF2-H2O;an antiseptic. ... (05 Mar 2000) ...

silver impregnation
Silver complexes employed to demonstrate reticulin in normal and diseased tissues, as well as neuroglia, neurofibrillae, argentaffin cells, and Golgi apparatus. ... (05 Mar 2000) ...

silver iodate
A reagent for the determination of chloride. ... (05 Mar 2000) ...

silver lactate
Has been used as an astringent and antiseptic. ... (05 Mar 2000) ...

silver nitrate
<chemical> A powerful germicide, used as an antiseptic, applied topically to the conjunctiva as a prophylactic against opthalmia neonatorum, and also used as an antiseptic in infections of the skin and mucous membrane. ... Pharmacological action: anti-infective agents, local. ... Chemical name: Nitric acid silver(1+) salt ... (12 Dec 1998) ...

silver oxide
Has been used in epilepsy and chorea; it is explosive when mixed with readily combustible substances. ... (05 Mar 2000) ...

silver picrate
An ionizable salt of silver; has been used in the treatment of trichomoniasis and moniliasis of the vagina. ... (05 Mar 2000) ...

silver point
A solid core cone of silver used in filling root canals in conjunction with a cement or paste. ... (05 Mar 2000) ...

silver poisoning
Synonym for argyria ... <dermatology> Deposition of silver salts in the skin from excessive oral intake. Signs: permanent blue to bronze discolouration of the skin and mucosa that is darker in regions exposed to light. ... (27 Sep 1997) ...

silver protein stain
<technique> A silver proteinate complex used in staining nerve fibres, nerve endings, and flagellate protozoa; also used to demonstrate phagocytosis in living animals by the cells of the reticuloendothelial system. ... (05 Mar 2000) ...

silver proteins
<chemical> Compounds of silver and proteins used as topical anti-infective agents. ... Pharmacological action: anti-infective agents, local. ... (12 Dec 1998) ...

silver stain
<technique> Any of a variety of stain's (e.g., Bielschowsky's, Gomori's silver, impregnation stain's) which employ alkaline silver nitrate solutions to stain connective tissue fibres (reticulin, collagen), calcium salt deposits, spirochaetes, neurological tissue, and nucleolar organiser regions. ... (05 Mar 2000) ...

silver staining
The use of silver, usually silver nitrate, as a reagent for producing contrast or colouration in tissue specimens. ... (12 Dec 1998) ...

silver sulfadiazine
<chemical> Antibacterial used topically in burn therapy. ... Pharmacological action: anti-infective agents, local. ... Chemical name: Silver, (4-amino-N-2-pyrimidinylbenzenesulfonamidato-NN,O1)- ... (12 Dec 1998) ...

silver-ammoniacal silver stain
<technique> A stain for the acid protein component of nucleolar regions which are active or which were transcriptionally active in the preceding interphase; uses silver nitrate, ammoniacal silver, and formalin. ... Synonym: Ag-AS stain. ... (05 Mar 2000) ...

silver-fork deformity
The deformity resembling the curve of the back of a fork seen in Colles' fractures. ... (05 Mar 2000) ...

silver-fork fracture
A Colles' fracture of the wrist in which the deformity has the appearance of a fork in profile. ... (05 Mar 2000) ...

Silver-Russell dwarfism
Synonym for Silver-Russell syndrome ... <syndrome> A disorder characterised by low birth weight, late closure of the anterior fontanel, bilateral bodily asymmetry, clinodactyly of the fifth fingers, triangular facies, and carp mouth; little useful genetic evidence. ... Synonym: Silver-Russell dwarfism. ... (05 Mar 2000) ...

Silver-Russell syndrome
<syndrome> A disorder characterised by low birth weight, late closure of the anterior fontanel, bilateral bodily asymmetry, clinodactyly of the fifth fingers, triangular facies, and carp mouth; little useful genetic evidence. ... Synonym: Silver-Russell dwarfism. ... (05 Mar 2000) ...

silver-tin alloy
Any alloy of silver and tin; commonly 3 parts Ag and 1 part Sn, forming Ag3Sn, the chief intermetallic compound in dental amalgam. ... (05 Mar 2000) ...

Silver, Henry
<person> U.S. Paediatrician, *1918. ... See: Silver-Russell dwarfism, Silver-Russell syndrome. ... (05 Mar 2000) ...

Silverman illuminator
<apparatus> A small annular lamp used with a reflector, and mounted on the objective by means of a small three jaw chuck. It furnishes above-stage illumination particularly suited to low powers. Because it generates considerable heat, care must be exercised in its use. ... (05 Aug 1998) ...

Silverman, Leslie
<person> U.S. Engineer, 1914-1966. ... See: Silverman-Lilly pneumotachograph. ... (05 Mar 2000) ...

Silverman, William
<person> 20th century U.S. Paediatrician. ... See: Caffey-Silverman syndrome. ... (05 Mar 2000) ...

silversides
<zoology> Any one of several species of small fishes of the family Atherinidae, having a silvery stripe along each side of the body. The common species of the American coast (Menidia notata) is very abundant. Called also silverside, sand smelt, friar, tailor, and tinker. ... <zoology> Brook silversides, a small fresh water North American …

Silverskiold, Nils
<person> Swedish orthopedist, 1888-1957. ... See: Silverskiold's syndrome. ... (05 Mar 2000) ...

Silverskiold's syndrome
<syndrome> A type of osteochondrodystrophy with only slight vertebral changes but with shortened and curved long bones of the extremities. ... (05 Mar 2000) ...

silvery
1. Resembling, or having the luster of, silver; grayish white and lustrous; of a mild luster; bright. 'All the enameled race, whose silvery wing Waves to the tepid zephyrs of the spring.' (Pope) ... 2. Besprinkled or covered with silver. ... 3. Having the clear, musical tone of silver; soft and clear in sound; as, silvery voices; a silvery laugh. ... …

silviculture
The theory and practice of forest stand establishment and management. ... (05 Dec 1998) ...

silvol
Synonym for mild silver protein ... A complex prepared by the reaction of silver oxide with either gelatin or serum albumin. Black shiny crystals liberate silver and it was formerly widely used as a topical anti-infective on mucous membranes. Contains from 19 to 25% silver, only a small fraction of which is ionizable. Can produce black or brown pigm …

silymarin
<chemical> 3,5,7-trihydroxy-2-(3-(4-hydroxy-3-methoxyphenyl)- 2-(hydroxymethyl)-1,4-benzodioxan-6-yl)-4-chromanone. A crystalline flavanolol from silybum marianum. It is of possible use in liver therapy. ... Chemical name: 4H-1-Benzopyran-4-one, 2-(2,3-dihydro-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-1,4-benzodioxin-6-yl)-2,3-dihydro-3, …

simar
A woman's long dress or robe; also light covering; a scarf. ... Alternative forms: cimar, cymar, samare, simare. ... Origin: F. Simarre. See Chimere. ... (01 Mar 1998) ...

simazine
<chemical> A triazine herbicide. ... Pharmacological action: herbicides, triazine. ... Chemical name: 1,3,5-Triazine-2,4-diamine, 6-chloro-N,N'-diethyl- ... (12 Dec 1998) ...

simbu group viruses
A group of viruses in the bunyavirus genus of the bunyaviridae family that are found in asia, africa, and the americas. ... (12 Dec 1998) ...

Simbu virus
A serologic group of the genus Bunyavirus, comprising a number of species including the type strain, Simbu virus. ... (05 Mar 2000) ...

simethicone
<chemical> A mixture of dimethyl polysiloxanes and silica gel used as an antiflatulent. Without the addition of silica gel (dimethicone), it is used as an ointment base ingredient and skin protectant. ... Pharmacological action: antifoaming agents, emollients, gastrointestinal agents. ... Chemical name: Simethicone ... (12 Dec 1998) ...

simian crease
A single palmar crease associated with Down's syndrome. ... (27 Sep 1997) ...

simian fissure
Synonym for lunate cerebral sulcus ... A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. ... Synonym: sulcus luna …

simian haemorrhagic fever
A highly fatal disease of macaque monkeys caused by the simian haemorrhagic fever virus and characterised by fever, facial oedema, anorexia, adipsia, skin petechiae, diarrhoea, haemorrhages, and death. ... (05 Mar 2000) ...

simian haemorrhagic fever virus
An arterivirus causing simian haemorrhagic fever in macaque monkeys. ... (05 Mar 2000) ...

simian hand
Deformity in which there is flattening of the thenar eminence, and the thumb lies adducted and extended; usually due to a median nerve lesion. ... (05 Mar 2000) ...

simian immunodeficiency virus
<virology> A retrovirus found in monkeys that is closely related to HIV. ... (09 Oct 1997) ...

simian malaria
Plasmodial infection of monkeys and apes, as with human malaria, transmitted chiefly by anopheline mosquitoes; a number of Plasmodium species are responsible, with Southeast Asia and Africa being the apparent centres of evolution; among the 20 plasmodial agents described from nonhuman primates, some resemble and induce a malarial infection similar …

simian vacuolating virus No. 40
A small (40 to 45 nm) DNA virus of the genus Polyomavirus, family Papovaviridae; the cause of seemingly inapparent infections in monkeys, especially rhesus, and a common contaminant of monkey cell cultures; the virus may cause inapparent infection in humans and may be excreted in stools of children for several weeks; it can produce fibrosarcoma in …

simian virus
Any of a number of virus's, belonging to various families, isolated from monkeys or from cultures of monkey cells. ... Synonym: vacuolating virus. ... (05 Mar 2000) ...

Simian Virus 40
See: SV40. ... (18 Nov 1997) ...

similar
1. Exactly corresponding; resembling in all respects; precisely like. ... 2. Nearly corresponding; resembling in many respects; somewhat like; having a general likeness. ... 3. Homogenous; uniform. ... <geometry> Similar figures, figures which differ from each other only in magnitude, being made up of the same number of like parts similarly situ …

similimum
Simillimum ... In homeopathy, the remedy indicated in a certain case because the same drug, when given to a healthy person, will produce the symptom complex most nearly approaching that of the disease in question. ... Origin: L. Simillimus, most like, superl. Of similis, like ... (05 Mar 2000) ...

similitude
1. The quality or state of being similar or like; resemblance; likeness; similarity; as, similitude of substance. 'Let us make now man in our image, man In our similitude.' (Milton) 'If fate some future bard shall join In sad similitude of griefs to mine.' (Pope) ... 2. The act of likening, or that which likens, one thing to another; fanciful or ima …

Simmonds, Morris
<person> German physician, 1855-1925. ... See: Simmonds' disease. ... (05 Mar 2000) ...

Simmonds' disease
Anterior pituitary insufficiency due to trauma, vascular lesions, or tumours; usually developing postpartum as a result of pituitary necrosis caused by ischemia during a hypotensive episode during delivery; characterised clinically by asthenia, loss of weight and body hair, arterial hypotension, and manifestations of thyroid, adrenal, and gonadal h …

Simmons, J
<person> U.S. Bacteriologist, 1890-1954. ... See: Simmons' citrate medium. ... (05 Mar 2000) ...

Simmons' citrate medium
A diagnostic medium used in the differentiation of species of Enterobacteriaceae, based on their ability to utilise sodium citrate as the sole source of carbon. ... (05 Mar 2000) ...

simon nitinol ivc filter
<radiology> Introduced 1990; Nitinol Medical Technologies, Woburn, MA. BARD, thermal memory alloy:titanium and nickel;, straightened form at cool temperatures (4-10C), reforms into predetermined filter shape at body temperatures efficacy, recurrent PE: 0 - 4.8%, IVC thrombosis: 7 - 11% (by clinical symptoms), access site thrombosis: 2 - 10% a …

Simon, Charles
<person> U.S. Physician, 1866-1927. ... See: Simon's sign. ... (05 Mar 2000) ...

Simon, Gustav
<person> German surgeon, 1824-1876. ... See: Simon's position. ... (05 Mar 2000) ...

Simon, Theodore
<person> French physician, 1873-1961. ... See: Binet-Simon scale. ... (05 Mar 2000) ...

Simon's position
A position for vaginal examination; a supine position with hips elevated, thighs and legs flexed, and thighs widely separated. ... (05 Mar 2000) ...

Simon's sign
<clinical sign> In incipient meningitis in children, the movements of the diaphragm are dissociated from those of the thorax. ... (05 Mar 2000) ...

Simonart, Pierre
<person> Belgian obstetrician, 1817-1847. ... See: Simonart's bands, Simonart's ligaments, Simonart's threads. ... (05 Mar 2000) ...

Simonart's bands
Synonym for amniotic bands ... The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. ... See: congenital amputation. ... Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. ... (05 Mar 2000) ...

Simonart's ligaments
Synonym for amniotic bands ... The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. ... See: congenital amputation. ... Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. ... (05 Mar 2000) ...

Simonart's threads
Synonym for amniotic bands ... The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. ... See: congenital amputation. ... Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. ... (05 Mar 2000) ...

Simonea folliculorum
Synonym for Demodex folliculorum ... A very common, universally distributed, and usually nonpathogenic species of mite that inhabits the hair follicles and sebaceous glands of humans, commonly around the nose and scalp margins. ... Synonym: Acarus folliculorum, Simonea folliculorum. ... (05 Mar 2000) ...

Simons, Arthur
<person> German physician, *1877. ... See: Simons' disease. ... (05 Mar 2000) ...

Simons' disease
Synonym for progressive lipodystrophy ... A condition characterised by a complete loss of the subcutaneous fat of the upper part of the torso, the arms, neck, and face, sometimes with an increase of fat in the tissues about and below the pelvis. ... Synonym: Barraquer's disease, lipodystrophia progessiva superior, partial lipoatrophy, Simons' disease …

Simonsiella
Genus of nonphotosynthetic, nonfruiting, Gram-negative, chemoorganotrophic, gliding bacteria that exist as multicellular filaments with the long axis of individual cells perpendicular to the long axis of the filament. The cells are flattened and curved to yield a convex-concave, crescent shaped symmetry. Isolated from the oral cavity of mammals. Ty …

simple
Undivided, of a leaf, not divided into leaflets, of a hair or an inflorescence, not branched. ... (09 Oct 1997) ...

simple absence
A brief clouding of consciousness accompanied by the abrupt onset of 3/sec spikes and waves on EEG. ... Synonym: pure absence. ... (05 Mar 2000) ...

simple anchorage
Anchorage in which the resistance to the movement of one or more teeth comes solely from resistance to tipping movement of the anchorage unit. ... (05 Mar 2000) ...

simple anisocoria
A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. ... Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. ... (05 Mar 2000) ...

simple beam
In dentistry, a straight beam that has only two supports, one at either end. ... (05 Mar 2000) ...

simple bone cyst
<radiology> Unicameral or solitary bone cyst, lytic, unilocular, central, meta-diaphyseal, humerus (most common site), age 0 - 10 yrs Differential diagnosis: bubbly bone lesions ... (12 Dec 1998) ...

simple closure
A single layer closure. ... (27 Sep 1997) ...

simple colour
Synonym for primary colour ... The three colour's of the retinal cone pigments (red, green, blue) that may be combined to match any hue. ... Synonym: simple colour. ... (05 Mar 2000) ...

simple conjunctivitis
Acute viral conjunctivitis, self-limited and of short duration. ... (05 Mar 2000) ...

simple crus of semicircular duct
The non-ampullary end of the lateral semicircular duct that opens independently into the utricle. ... Synonym: crus membranaceum simplex ductus semicircularis, simple membranous limb of semicircular duct. ... (05 Mar 2000) ...

simple diplopia
Synonym for homonymous images ... Double image's produced by stimuli arising from points proximal to the horopter. ... Synonym: homonymous diplopia, simple diplopia, uncrossed diplopia. ... (05 Mar 2000) ...

simple dislocation
Synonym for closed dislocation ... A dislocation not complicated by an external wound. ... Synonym: simple dislocation. ... (05 Mar 2000) ...

simple epithelium
An epithelium having one layer of cells. ... (05 Mar 2000) ...