| senatusconsult | A decree of the Roman senate. Origin: L. Senatus consultum. Source: Websters Dictionary (01 Mar 1998) |
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| Sendai virus | <virology> Parainfluenza virus type 1 (Paramyxoviridae). Can cause fatal pneumonia in mice and may cause respiratory disease in humans. The ability of ultraviolet inactivated virus to fuse mammalian cells has been extensively used in the study of heterokaryons and hybrid cell lines. (18 Nov 1997) |
| Senear, Francis | <person> U.S. Dermatologist, 1889-1958. See: Senear-Usher disease, Senear-Usher syndrome. (05 Mar 2000) |
| Senear-Usher disease | An eruption involving sun-exposed skin, especially the face; the lesions are scaling erythematous macules and blebs, combining the clinical features of both lupus erythematosus and pemphigus vulgaris; bullae are subcorneal; probably a variant of pemphigus foliaceus. Synonym: Senear-Usher disease, Senear-Usher syndrome. (05 Mar 2000) |
| Senear-Usher syndrome | An eruption involving sun-exposed skin, especially the face; the lesions are scaling erythematous macules and blebs, combining the clinical features of both lupus erythematosus and pemphigus vulgaris; bullae are subcorneal; probably a variant of pemphigus foliaceus. Synonym: Senear-Usher disease, Senear-Usher syndrome. (05 Mar 2000) |
| Seneca snakeroot | <medicine> Seneca root. Source: Websters Dictionary (01 Mar 1998) |
| senecas | <ethnology> A tribe of Indians who formerly inhabited a part of Western new York. This tribe was the most numerous and most warlike of the Five Nations. <botany> Seneca grass, the rootstock of an American species of milkworth (Polygala Senega) having an aromatic but bitter taste. It is often used medicinally as an expectorant and diuretic, and, in large doses, as an emetic and cathartic. Alternative forms: Senega root, and Seneka root. Source: Websters Dictionary (01 Mar 1998) |
| senecio | <botany> A very large genus of composite plants including the groundsel and the golden ragwort. Origin: L, groundsel, lit, an old man. So called in allusion to the hoary appearance of the pappus. Source: Websters Dictionary (01 Mar 1998) |
| senecioic acid | (CH3)2C==CH-COOH; 3-Methyl-2-butenoic acid; 3,3-dimethylacrylic acid; methylcrotonic acid;a polymer precursor and a precursor of isoprenoid and terpene compounds; the acid component of binapacryl in which it is esterified with 4,6-dinitro-2-(1-methylpropyl)phenol; the coenzyme A derivative is an intermediate in l-leucine degradation; used as a fungicide and miticide. (05 Mar 2000) |
| seneciosis | Liver degeneration and necrosis caused by ingestion of plants of the genus Senecio, such as ragwort and groundsel; similar hepatotoxic properties have been observed after ingestion of some kinds of Crotalaria and Heliotropium. (05 Mar 2000) |
| senega | <medicine> Seneca root. Source: Websters Dictionary (01 Mar 1998) |
| senegal | A republic in western africa, southwest of mauritania and east of mali. Its capital is dakar. The first settlements were by the portuguese in the 15th century and the french in the 17th century, with the coastal region becoming the object of much rivalry and conflict between the two until french possession was recognised in 1814. Senegal became independent in 1960. The nation was named for the senegal river, its main river, which possibly derived its name from a local african word meaning navigable. (12 Dec 1998) |
| senegal gum | The gum of Acacia senegal. See: acacia. (05 Mar 2000) |
| senegin | <medicine> A substance extracted from the rootstock of the Polygala Senega (Seneca root), and probably identical with polygalic acid. Source: Websters Dictionary (01 Mar 1998) |
| senescence | The state of being old. Origin: L. Senesco, to grow old, fr. Senex, old Dental senescence, that condition of the teeth and associated structures in which there is deterioration due to normal or premature aging processes. (05 Mar 2000) |