| spider telangiectasia | spider angioma |
|---|---|
| spider venoms | Venoms of arthropods of the order araneida of the arachnida. The venoms usually contain several protein fractions, including enzymes, haemolytic, neurolytic, and other toxins. (12 Dec 1998) |
| spider's web | <zoology> The silken web which is formed by most kinds of spiders, particularly the web spun to entrap their prey. See Geometric spider, Triangle spider, under Geometric, and Triangle. Source: Websters Dictionary (01 Mar 1998) |
| spider-burst | Radiating dull red capillary lines on the skin of the leg, usually without any visible or palpable varicose veins, but nevertheless due to deep-seated venous dilation; sometimes referred to as skyrocket capillary ectasis. Origin: spiderweb + sunburst (05 Mar 2000) |
| spiders | Arthropods of the class arachnida, order araneae. Except for mites and ticks, spiders constitute the largest order of arachnids, with approximately 37,000 species having been described. The majority of spiders are harmless, although some species can be regarded as moderately harmful since their bites can lead to quite severe local symptoms. (12 Dec 1998) |
| spiderwort | <botany> An American endogenous plant (Tradescantia Virginica), with long linear leaves and ephemeral blue flowers. The name is sometimes extended to other species of the same genus. Source: Websters Dictionary (01 Mar 1998) |
| spiegel iron | <chemistry> A fusible white cast iron containing a large amount of carbon (from three and a half to six per cent) and some manganese. When the manganese reaches twenty-five per cent and upwards it has a granular structure, and constitutes the alloy ferro manganese, largely used in the manufacture of Bessemer steel. Synonym: specular pig iron, spiegel, and spiegeleisen. Origin: G. Spiegel mirror + E. Iron. Source: Websters Dictionary (01 Mar 1998) |
| Spiegelberg | Otto, German gynecologist, 1830-1881. See: Spiegelberg's criteria. (05 Mar 2000) |
| Spiegelberg's criteria | 1) the oviduct on the affected side must be intact; 2) the amnionic sac must occupy the position of the ovary; 3) the amnionic sac must be connected to the uterus by the ovarian ligament; and 4) ovarian tissue must be present in the wall of the amnionic sac. (05 Mar 2000) |
| Spieghel | Adrian van der. See: Spigelius. (05 Mar 2000) |
| Spiegler | Eduard, Austrian dermatologist, 1860-1908. See: Spiegler-Fendt pseudolymphoma, Spiegler-Fendt sarcoid. (05 Mar 2000) |
| Spiegler-Fendt pseudolymphoma | A soft red to violaceous skin nodule often involving the head, caused by dense infiltration of the dermis by lymphocytes and histiocytes, often forming lymphoid follicles, separated from the epidermis by a narrow noninfiltrating layer. Synonym: Spiegler-Fendt pseudolymphoma, Spiegler-Fendt sarcoid. (05 Mar 2000) |
| Spiegler-Fendt sarcoid | A soft red to violaceous skin nodule often involving the head, caused by dense infiltration of the dermis by lymphocytes and histiocytes, often forming lymphoid follicles, separated from the epidermis by a narrow noninfiltrating layer. Synonym: Spiegler-Fendt pseudolymphoma, Spiegler-Fendt sarcoid. (05 Mar 2000) |
| Spielmeyer | Walter, Munich neurologist, 1879-1935. See: Spielmeyer's acute swelling, Spielmeyer-Stock disease, Spielmeyer-Vogt disease. (05 Mar 2000) |
| Spielmeyer-Sjogren disease | Cerebral sphingolipidosis, late juvenile type. (05 Mar 2000) |