| SIF | <abbreviation> Somatotropin release-inhibiting factor. (05 Mar 2000) |
|---|---|
| sifac | <zoology> The white indris of Madagascar. It is regarded by the natives as sacred. Source: Websters Dictionary (01 Mar 1998) |
| sifilet | <zoology> The six-shafted bird of paradise. See Paradise bird, under Paradise. Origin: Cf. F. Siflet. Source: Websters Dictionary (01 Mar 1998) |
| sifter | 1. One who, or that which, sifts. 2. <zoology> Any lamellirostral bird, as a duck or goose; so called because it sifts or strains its food from the water and mud by means of the lamell of the beak. Source: Websters Dictionary (01 Mar 1998) |