| leg ulcer | Ulceration of the skin and underlying structures of the lower extremity. About 90% of the cases are due to venous insufficiency (varicose ulcer), 5% to arterial disease, and the remaining 5% to other causes. (12 Dec 1998) |
|---|---|
| Lipschutz' ulcer | A simple acute ulceration of the vulva or lower vagina of nonvenereal origin. Synonym: ulcus vulvae acutum. (05 Mar 2000) |
| lupoid ulcer | An ulcer resembling that of cutaneous tuberculosis. (05 Mar 2000) |
| mean sea level | <marine biology> A tidal datum: the arithmetic mean of hourly water elevations observed over a specific 19-year cycle. Points on land can be referenced to a mean sea level, in which case the datum assumes zero elevation. (09 Oct 1997) |
| San Miguel sea lion virus | A calicivirus, family Caliciviridae, first isolated from sea lions on San Miguel island off the California coast, which is indistinguishable from the vesicular exanthema of swine virus both biophysically and clinically in terms of the vesicular disease syndrome that it produces in swine. (05 Mar 2000) |
| sea | <oncogene> An oncogene, identified in bird sarcoma, encoding a receptor tyrosine kinase. (18 Nov 1997) |
| sea acorn | <zoology> An acorn barnacle (Balanus). Source: Websters Dictionary (01 Mar 1998) |
| sea adder | <zoology> The European fifteen-spined stickleback (Gasterosteus spinachia); called also bismore. The European tanglefish, or pipefish (Syngnathus acus). Source: Websters Dictionary (01 Mar 1998) |
| sea amenone | <zoology> Any one of numerous species of soft-bodied Anthozoa, belonging to the order Actrinaria; an actinian. They have the oral disk surrounded by one or more circles of simple tapering tentacles, which are often very numerous, and when expanded somewhat resemble the petals of flowers, with colours varied and often very beautiful. Source: Websters Dictionary (01 Mar 1998) |
| sea anemones | Numerous almost invariably solitary polyps of the order actiniaria. (12 Dec 1998) |
| sea ape | <zoology> The thrasher shark. The sea otter. Source: Websters Dictionary (01 Mar 1998) |
| sea apple | <botany> The fruit of a West Indian palm (Manicaria Plukenetii), often found floating in the sea. Source: Websters Dictionary (01 Mar 1998) |
| sea arrow | <zoology> A squid of the genus Ommastrephes. See Squid. Source: Websters Dictionary (01 Mar 1998) |
| sea-bar | <zoology> A tern. Source: Websters Dictionary (01 Mar 1998) |
| sea barrow | <zoology> A sea purse. Source: Websters Dictionary (01 Mar 1998) |