| Stephanofilaria | A genus of Filaroid nematodes in the family Stephanofilariidae, subcutaneous parasites of large mammals, especially cattle. See: stephanofilariasis. (05 Mar 2000) |
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| 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 cattle, usually on the underside of the abdomen. Origin: G. Stephanos, crown, + filaria (05 Mar 2000) |
| 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) |
| stephanotis | 1. <botany> A genus of climbing asclepiadaceous shrubs, of Madagascar, Malaya, etc. They have fleshy or coriaceous opposite leaves, and large white waxy flowers in cymes. 2. A perfume said to be prepared from the flowers of Stephanotis floribunda. Origin: NL, fr. Gr. Fit for a crown, fr. Crown. Source: Websters Dictionary (01 Mar 1998) |
| 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 infection, or indirect, by ingestion of earthworms in which the larvae can survive. Origin: G. Stephanos, crown, + oura, tail (05 Mar 2000) |
| 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) |
| steppe | One of the vast plains in Southeastern Europe and in Asia, generally elevated, and free from wood, analogous to many of the prairies in Western North America. See Savanna. Steppe murrain. <veterinary> See Rinderpest. Origin: From Russ. Stepe, through G. Or F. Steppe. Source: Websters Dictionary (01 Mar 1998) |
| 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. See: steroids. (05 Mar 2000) |
| sterco- | Faeces. See: copro-, scato-. Origin: L. Stercus, excrement (05 Mar 2000) |
| stercobilin | <physiology> A colouring matter found in the faeces, a product of the alteration of the bile pigments in the intestinal canal, identical with hydrobilirubin. Origin: L. Stercus dung + E. Bilin. Source: Websters Dictionary (01 Mar 1998) |
| stercolin | <physiology> Same as Serolin . Origin: L. Stercus dung + oleum oil. Source: Websters Dictionary (01 Mar 1998) |
| stercolith | Synonym: coprolith. Origin: sterco-+ G. Lithos, stone (05 Mar 2000) |