| siamang | <zoology> A gibbon (Hylobates syndactylus), native of Sumatra. It has the second and third toes partially united by a web. Origin: Malay siamang. Source: Websters Dictionary (01 Mar 1998) |
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| sib | Related by blood; akin. "Your kindred is but . . . Little sib to you." (Chaucer) "[He] is no fairy birn, ne sib at all To elfs, but sprung of seed terrestrial." (Spenser) A blood relation. Origin: AS. Sibb alliance, gesib a relative. See Gossip. Source: Websters Dictionary (01 Mar 1998) |
| sibbens | <medicine> A contagious disease, endemic in Scotland, resembling the yaws. It is marked by ulceration of the throat and nose and by pustules and soft fungous excrescences upon the surface of the body. In the Orkneys the name is applied to the itch. Alternative forms: sivvens. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |
| siberian | Of or pertaining to Siberia, a region comprising all northern Asia and belonging to Russia; as, a Siberian winter. A native or inhabitant of Siberia. <botany> Siberian crab, a small leguminous tree (Cragana arborescens) with yellow flowers. It is a native of Siberia. Origin: From Siberia, Russ. Sibire. Source: Websters Dictionary (01 Mar 1998) |
| sibilant | Hissing or whistling in character; denoting a form of rale. Origin: L. Sibilans (-ant-), pres. P. Of sibilo, to hiss (05 Mar 2000) |
| sibilant rale | A whistling sound caused by air moving through a viscid secretion narrowing the lumen of a bronchus. Synonym: whistling rale. (05 Mar 2000) |
| sibilus | A sibilant rale. Origin: L. A hissing (05 Mar 2000) |
| sibling | Brother or sister. (13 Nov 1997) |
| sibling relations | Interactions and relationships between sisters and/or brothers. The concept also applies to animal studies. (12 Dec 1998) |
| sibling rivalry | Jealous competition among children, especially for the attention, affection, and esteem of their parents; by extension, a factor in both normal and abnormal competitiveness throughout life. (05 Mar 2000) |
| sibship | 1. The reciprocal state between individuals who have the same pair of parents. 2. All progeny of one pair of parents. Origin: A.S. Sib, relationship (05 Mar 2000) |
| Sibson | Francis, English anatomist, 1814-1876. See: Sibson's aponeurosis, Sibson's fascia, Sibson's groove, Sibson's muscle, Sibson's aortic vestibule. (05 Mar 2000) |
| Sibson's aortic vestibule | Synonym: aortic vestibule. (05 Mar 2000) |
| Sibson's aponeurosis | The thickened portion of endothoracic fascia extending over the cupola of the pleura and reinforcing it; it attaches to the inner border of the first rib and to the transverse process of the seventh cervical vertebra. Synonym: membrana suprapleuralis, Sibson's aponeurosis, Sibson's fascia. (05 Mar 2000) |
| Sibson's fascia | The thickened portion of endothoracic fascia extending over the cupola of the pleura and reinforcing it; it attaches to the inner border of the first rib and to the transverse process of the seventh cervical vertebra. Synonym: membrana suprapleuralis, Sibson's aponeurosis, Sibson's fascia. (05 Mar 2000) |