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

stenosis
Narrowing or stricture of a duct or canal. ... Origin: Gr. Stenosis ... (18 Nov 1997) ...

stenostenosis
Stricture of the parotid duct (Steno's or Stensen's duct). ... (05 Mar 2000) ...

stenostomia
Narrowness of the oral cavity. ... Origin: steno-+ G. Stoma, mouth ... (05 Mar 2000) ...

stenothermal
Thermostable through a narrow temperature range; able to withstand only slight changes in temperature. ... Origin: steno-+ G. Therme, heat ... (05 Mar 2000) ...

stenothorax
A narrow contracted chest. ... Origin: steno-+ thorax. ... (05 Mar 2000) ...

stenotic
Narrowed; affected with stenosis. ... Synonym: stenosal. ... (05 Mar 2000) ...

stenoxenous
Denoting a parasite with a narrow host range; e.g., Eimeria (among the Coccidia), hookworm, biting and sucking lice. ... Origin: steno-+ G. Xenos, a stranger, foreigner ... (05 Mar 2000) ...

stenoxous parasite
A parasite with a narrow or specific host range. ... (05 Mar 2000) ...

Stensen
Niels (Nicholaus), Danish anatomist, 1638-1686. ... See: Stensen's duct, Stensen's experiment, Stensen's foramen, Stensen's plexus, Stensen's veins. ... (05 Mar 2000) ...

Stensen's duct
Synonym for parotid duct ... The duct of the parotid gland opening from the cheek into the vestibule of the mouth opposite the neck of the superior second molar tooth. ... Synonym: ductus parotideus, Blasius' duct, Stensen's duct, Steno's duct. ... (05 Mar 2000) ...

Stensen's experiment
Compression of the abdominal aorta of an animal promptly causes paralysis of the posterior portions of the body since the blood supply to the lumbar cord is almost entirely shut off. ... (05 Mar 2000) ...

Stensen's foramen
Synonym for incisive foramen ... One of several (usually four) openings of the incisive canals into the incisive fossa. ... Synonym: foramen incisivum, incisor foramen, Stensen's foramen. ... (05 Mar 2000) ...

Stensen's plexus
The venous network surrounding the parotid (Stensen's) duct. ... (05 Mar 2000) ...

Stensen's veins
Synonym for vortex veins ... Several veins (usually four) from the vascular tunic formed of veins accompanying the posterior ciliary arteries and the ciliary body; then drain into the superior or inferior ophthalmic vein. ... Synonym: venae vorticosae, venae choroideae oculi, choroid veins of eye, Stensen's veins, vasa vorticosa, vorticose veins. ... …

stent
<equipment> A tube made of metal or plastic that is inserted into a vessel or passage to keep the lumen open and prevent closure due to a stricture or external compression. ... Stents are commonly used to keep blood vessels open in the coronary arteries, into the oesophagus for strictures or cancer, the ureters to maintain drainage from the ki …

Stent graft
An inlay skin graft, or a skin graft held in place by a tie-over dressing. ... (05 Mar 2000) ...

Stent, C
<person> English dentist, +1901. ... See: stent, Stent graft. ... (05 Mar 2000) ...

stentor
1. A herald, in the Iliad, who had a very loud voice; hence, any person having a powerful voice. ... 2. <zoology> Any species of ciliated Infusoria belonging to the genus Stentor and allied genera, common in fresh water. The stentors have a bell-shaped, or cornucopia-like, body with a circle of cilia around the spiral terminal disk. ... 3. < …

stents
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting. ... (12 Dec 1998) ...

Stenvers projection
Oblique radiographic projection of the skull devised to provide an unobstructed view of the petrous bone, bony labyrinth, internal auditory canal, and meatus. ... Synonym: Stenvers view. ... (05 Mar 2000) ...

Stenvers view
Synonym for Stenvers projection ... Oblique radiographic projection of the skull devised to provide an unobstructed view of the petrous bone, bony labyrinth, internal auditory canal, and meatus. ... Synonym: Stenvers view. ... (05 Mar 2000) ...

step
1. In dentistry, a dove-tailed or similarly shaped projection of a cavity prepared in a tooth into a surface perpendicular to the main part of the cavity for the purpose of preventing displacement of the restoration (filling) by the force of mastication. ... 2. A change in direction resembling a stair-step in a line, a surface, or the construction o …

stephanial
Pertaining to the stephanion. ... (05 Mar 2000) ...

Stephanofilaria
A genus of Filaroid nematodes in the family Stephanofilariidae, subcutaneous parasites of large mammals, especially cattle. ... See: stephanofilariasis. ... (05 Mar 2000) ...

Stephanofilaria stilesi
A skin-infecting species of filaria parasitic in cattle and transmitted by the horn fly, Haematobia irritans; the only species known to occur in the U.S.; characterised by a row of spines behind the mouth of the adult worm, which is 6 to 8 mm in the female, 2 to 3 mm in the male. Both adults and larvae are found in granulomatous skin lesions in cat …

stephanofilariasis
Nfection with filarial parasites of the genus Stephanofilaria, a genus of small filiarial worms (less than 6 mm) causing subcutanneous lesions in cattle and other large grazing mammals. ... (05 Mar 2000) ...

Stephanurus dentatus
The kidney worm or lard worm of swine, a strongyle nematode parasite species that also occurs, though rarely, in the liver of cattle. Adult worms in swine live in the perirenal fat, the kidney pelvis, or as erratic forms in many other locations. Eggs are passed through the urine and infection is direct, by ingestion of infective larvae or by skin i …

steppage
Synonym: steppage gait. ... Origin: Fr. ... (05 Mar 2000) ...

steppage gait
A gait in which the advancing foot is lifted higher than usual so that it can clear the ground, because it cannot be dorsiflexed. Seen with peroneal neuropathies and other disorders causing foot dorsiflexion weakness. ... See: high steppage gait. ... Synonym: steppage. ... (05 Mar 2000) ...

stepping reflex
If the plantar surface of a hind foot of a dog is pressed gently, a movement of extension of the limb will follow, accompanied sometimes by flexion of the opposite hind limb. ... (05 Mar 2000) ...

steradian
The unit of solid angle; the solid angle that encloses an area on the surface of a sphere equivalent to the square of the radius of the sphere. ... Origin: G. Stereos, solid, + radion, radius ... (05 Mar 2000) ...

sterane
The hypothetical parent molecule for any steroid hormone; a saturated hydrocarbon compound that contains no oxygen. The name was originally conceived to achieve forms of systematic nomenclature, but is now supplanted by the fundamental variants: gonane, estrane, androstane, norandrostane (etiane), cholane, cholestane, ergostane, and stigmastane. …

sterco-
Faeces. ... See: copro-, scato-. ... Origin: L. Stercus, excrement ... (05 Mar 2000) ...

stercolith
Synonym: coprolith. ... Origin: sterco-+ G. Lithos, stone ... (05 Mar 2000) ...

stercoraceous
Relating to or containing faeces. ... Synonym: stercoral, stercorous. ... (05 Mar 2000) ...

stercoraceous vomiting
Synonym for faecal vomiting ... Vomitus with appearance and/or odour of faeces suggestive of long standing and distal small bowel or colonic obstruction. ... Synonym: copremesis, stercoraceous vomiting. ... (05 Mar 2000) ...

stercoral
Synonym for stercoraceous ... Relating to or containing faeces. ... Synonym: stercoral, stercorous. ... (05 Mar 2000) ...

stercoral abscess
A collection of pus and faeces. ... Synonym: faecal abscess. ... (05 Mar 2000) ...

stercoral appendicitis
Appendicitis following a lodgment of faecal material in the appendix. ... (05 Mar 2000) ...

stercoral ulcer
An ulcer of the colon due to pressure and irritation of retained faecal masses. ... (05 Mar 2000) ...

stercoroma
Synonym: coproma. ... Origin: sterco-+ G. -oma, tumour ... (05 Mar 2000) ...

stercorous
Synonym for stercoraceous ... Relating to or containing faeces. ... Synonym: stercoral, stercorous. ... (05 Mar 2000) ...

sterculia gum
The dried gummy exudation from Sterculia urens, S. Villosa, S. Tragacantha, or other species of Sterculia, or from Cochlospermum gossypium or other species of Cochlospermum (family Bixaceae); used as a hydrophilic laxative and in the manufacture of lotions and pastes. ... Synonym: karaya gum. ... (05 Mar 2000) ...

sterculiaceous
<botany> Of or pertaining to a natural order (Sterculiaceae) of polypetalous exogenous plants, mostly tropical. The cacao (Theobroma Cacao) is the most useful plant of the order. ... Origin: NL. Sterculia, the typical genus, fr. L. Sterculius the deity that presided over manuring, from stercus dung. So called because one of the original specie …

stercus
Synonym: faeces. ... Origin: L. Faeces, excrement ... (05 Mar 2000) ...

stere
A measure of capacity; equivalent to a cubic meter or a kiloliter; equal to 1.307951 cubic yards. ... Origin: Fr. Fr. G. Stereos, solid ... (05 Mar 2000) ...

stereo-
<prefix> A combining form meaning solid, hard, firm, as in stereochemistry, stereography. ... Origin: Gr. Stereos solid. See Stare to gaze. ... (29 Oct 1998) ...

stereo-orthopter
A type of stereoscope used in visual training. ... Origin: stereo-+ G. Orthos, straight, + optikos, optical ... (05 Mar 2000) ...

stereoagnosis
Synonym for tactile agnosia ... The inability to recognise objects by touch, in the presence of intact cutaneous and proprioceptive hand sensation; caused by lesion in the contralateral parietal lobe. ... Synonym: astereognosis, stereoagnosis, stereoanesthesia. ... (05 Mar 2000) ...

stereoanesthesia
Synonym: tactile agnosia. ... Origin: stereo-+ G. An-priv. + aisthesis, sensation ... (05 Mar 2000) ...

stereoarthrolysis
Production of a new joint with mobility in cases of bony ankylosis. ... Origin: stereo-+ G. Arthron, joint, + lysis, loosening ... (05 Mar 2000) ...

stereocampimeter
An apparatus for studying the central visual fields while the fellow eye holds fixation. ... Origin: stereo-+ L. Campus, field, + G. Metron, measure ... (05 Mar 2000) ...

stereochemical configuration
<chemistry> The arrangement of atoms in a molecule in three-dimensional space, especially with regard to the differences between enantiomers. The arrangements are specified in chemical formulas with the letters R, S, L, and/or D. ... In the R, S system, each asymmetric carbon atom is classified as R (for rectus, Latin for right) if the chemica …

stereochemical formula
A chemical formula in which the arrangement of the atoms or atomic groupings in space are indicated. ... Synonym: spatial formula. ... (05 Mar 2000) ...

stereochemical isomerism
Synonym for stereoisomerism ... The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. ... (12 Dec 1998) ...

stereocilium
<cell biology> Microfilament bundle supported projection, several microns long, from the apical surface of sensory epithelial cells hair cells) in inner ear: like a microvillus, but larger. It is stiff and may act as a transducer directly or merely restrict the movement of the sensory cilium which does have an axoneme). ... Also described on c …

stereocinefluorography
An obsolete practice of recording on motion picture film the images obtained by stereoscopic fluoroscopy; three-dimensional views are obtained. ... (05 Mar 2000) ...

stereocolpogram
Picture taken with the stereocolposcope. ... (05 Mar 2000) ...

stereocolposcope
<instrument> Instrument that provides the observer with a magnified three-dimensional gross inspection of the vagina and cervix. ... Origin: stereo-+ G. Kolpos, a hollow (vagina), skopeo, to view ... (05 Mar 2000) ...

stereoelectroencephalography
Recording of electrical activity in three planes of the brain, i.e., with surface and depth electrodes. ... (05 Mar 2000) ...

stereoencephalometry
The localization of brain structures by use of three-dimensional coordinates. ... (05 Mar 2000) ...

stereoencephalotomy
Synonym: stereotaxy. ... Origin: stereo-+ G. Encephalos, brain, + tome, a cutting ... (05 Mar 2000) ...

stereognosis
<psychology> The ability to recognise objects by sense of touch. ... (13 Nov 1997) ...

stereognostic
Relating to stereognosis. ... (05 Mar 2000) ...

stereographic
Synonym for stereographical ... Made or done according to the rules of stereography; delineated on a plane; as, a stereographic chart of the earth. ... <geometry> Stereographic projection, a method of representing the sphere in which the center of projection is taken in the surface of the sphere, and the plane upon which the projection is made …

stereographical
Made or done according to the rules of stereography; delineated on a plane; as, a stereographic chart of the earth. ... <geometry> Stereographic projection, a method of representing the sphere in which the center of projection is taken in the surface of the sphere, and the plane upon which the projection is made is at right andles to the diame …

stereography
The art of delineating the forms of solid bodies on a plane; a branch of solid geometry which shows the construction of all solids which are regularly defined. Illustration: 'Stereography'. 5 figures, illustrating arrangements of triangles, squares, or pentagons which can be drawn on a surface and folded into the five regular polyhedra. ... By cutti …

stereoisomer
<chemistry> Molecules that have the same molecular formula, the same sequence of bonds, but different spatial arrangements. Geometric isomers and optical isomers are both types of stereoisomers. ... (09 Jan 1998) ...

stereoisomeric
Relating to stereoisomerism. ... (05 Mar 2000) ...

stereoisomerism
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. ... (12 Dec 1998) ...

stereology
A study of the three-dimensional aspects of a cell or microscopic structure. ... Origin: stereo-+ G. Logos, study ... (05 Mar 2000) ...

stereometry
1. Measurement of a solid object or the cubic capacity of a vessel. ... 2. Determination of the specific gravity of a liquid. ... (05 Mar 2000) ...

stereomicroscope
<instrument> A microscope (simple or compound) for each eye (binocular), giving different aspects and, therefore, a stereoscopic effect. There are two kinds of compound stereomicroscopes: binobjective and common main objective. ... See: Greenough microscope. ... (05 Aug 1998) ...

stereopathy
Persistent stereotyped thinking. ... (05 Mar 2000) ...

stereophantoscope
<instrument> An obsolete term for a stereophoroscope with rotating disks of different colours instead of pictures. ... Origin: stereo-+ G. Phantos, visible, + skopeo, to view ... (05 Mar 2000) ...

stereophorometer
A phorometer with a stereoscopic attachment. ... (05 Mar 2000) ...

stereophoroscope
<instrument> An obsolete term for a stereoscope producing images having apparent motion. ... Origin: stereo-+ G. Phoros, bearing, skopeo, to view ... (05 Mar 2000) ...

stereophotomicrograph
A stereoscopic photomicrograph that, when viewed with a stereoscope, appears three-dimensional. ... (05 Mar 2000) ...

stereopsis
Synonym: stereoscopic vision. ... Origin: stereo-+ G. Opsis, vision ... (05 Mar 2000) ...

stereopticon
An instrument, consisting essentially of a magic lantern in which photographic pictures are used, by which the image of a landscape, or any object, may be thrown upon a screen in such a manner as to seem to stand out in relief, so as to form a striking and accurate representation of the object itself; also, a pair of magic lanterns for producing th …

stereoradiography
Preparation of a pair of radiographs with appropriate shift of the X-ray tube or film so that the images can be viewed stereoscopically to give a three-dimensional appearance. ... Synonym: stereography, stereoroentgenography. ... (05 Mar 2000) ...

stereoroentgenography
Synonym for stereoradiography ... Preparation of a pair of radiographs with appropriate shift of the X-ray tube or film so that the images can be viewed stereoscopically to give a three-dimensional appearance. ... Synonym: stereography, stereoroentgenography. ... (05 Mar 2000) ...

stereoscope
<instrument> An optical instrument for giving to pictures the appearance of solid forms, as seen in nature. It combines in one, through a bending of the rays of light, two pictures, taken for the purpose from points of view a little way apart. It is furnished with two eyeglasses, and by refraction or reflection the pictures are superimposed, …

stereoscopic
Relating to a stereoscope, or giving the appearance of three dimensions. ... (05 Mar 2000) ...

stereoscopic acuity
The detection of differences in distance by superimposition of slightly different retinal images into a single image to the brain. ... (05 Mar 2000) ...

stereoscopic microscope
<instrument> A microscope having double eyepieces and objectives and thus independent light paths, giving a three-dimensional image. ... (05 Mar 2000) ...

stereoscopic parallax
Synonym for binocular parallax ... The difference in the angles formed by the lines of sight to two objects situated at different distances from the eyes; a factor in the visual perception of depth. ... Synonym: stereoscopic parallax. ... (05 Mar 2000) ...

stereoscopic vision
The single perception of a slightly different image from each eye. ... Synonym: stereopsis. ... (05 Mar 2000) ...

stereoselective
As applied to a reaction, denoting a process in which of two or more possible stereoisomeric products only one predominates; a stereoselective process is not necessarily stereospecific. ... (05 Mar 2000) ...

stereospecific
As applied to a reaction, denoting a process in which stereoisomerically different starting materials give rise to stereoisomerically different products; a stereospecific process is thus necessarily stereoselective, but not all stereoselective processes are stereospecific. ... (05 Mar 2000) ...

stereotactic cordotomy
Synonym for cordotomy ... <procedure> Any operation on the spinal cord. ... (12 Dec 1998) ...

stereotactic instrument
Stereotaxic instrument, an apparatus attached to the head, used to localise precisely an area in the brain by means of coordinates related to intracerebral structures. ... (05 Mar 2000) ...

stereotactic needle biopsy
Biopsy done while breast is compressed under mammography. A series of pictures locate the lesion, and a radiologist enters information into a computer. The computer calculates information and positions a needle to remove the finding. A needle is inserted into the lump, and a piece of tissue is removed and sent to the lab for analysis. May be referr …

stereotactic radiosurgery
A radiation therapy technique that uses a large number of narrow, precisely aimed, highly focused beams of ionising radiation. The beams are aimed from many directions circling the head and meet at a specific point. ... (16 Dec 1997) ...

stereotactic surgery
Synonym for stereotaxy ... A precise method of destroying deep-seated brain structures located by use of three-dimensional coordinates. ... Synonym: stereoencephalotomy, stereotactic surgery, stereotaxic surgery, stereotaxis. ... (05 Mar 2000) ...

stereotaxic localization
Localization of intracerebral nuclei by coordinates with reference to anatomical landmarks in the brain. ... (05 Mar 2000) ...

stereotaxic surgery
Synonym for stereotaxy ... A precise method of destroying deep-seated brain structures located by use of three-dimensional coordinates. ... Synonym: stereoencephalotomy, stereotactic surgery, stereotaxic surgery, stereotaxis. ... (05 Mar 2000) ...

stereotaxic techniques
Techniques during brain surgery that use a system of three-dimensional coordinates to locate the site to be operated on. ... (12 Dec 1998) ...

stereotaxis
Use of a computer and scanning devices to create three-dimensional pictures. This method can be used to direct a biopsy, external radiation, or the insertion of radiation implants. ... (12 Dec 1998) ...

stereotaxy
A precise method of destroying deep-seated brain structures located by use of three-dimensional coordinates. ... Synonym: stereoencephalotomy, stereotactic surgery, stereotaxic surgery, stereotaxis. ... (05 Mar 2000) ...