SANTONINATE
San"to*nin`ate, n. (Chem.)
Defn: A salt of santoninic acid.
SANTONINIC
San`to*nin"ic, a. (Chem.)
Defn: Of or pertaining to santonin; — used specifically to designate an acid not known in the free state, but obtained in its salts.
SAO
Sa"o, n. (Zoöl.)
Defn: Any marine annelid of the genus Hyalinæcia, especially H. tubicola of Europe, which inhabits a transparent movable tube resembling a quill in color and texture.
SAP Sap, n. Etym: [AS. sæp; akin to OHG. saf, G. saft, Icel. safi; of uncertain origin; possibly akin to L. sapere to taste, to be wise, sapa must or new wine boiled thick. Cf. Sapid, Sapient.]
1. The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition.
Note: The ascending is the crude sap, the assimilation of which takes place in the leaves, when it becomes the elaborated sap suited to the growth of the plant.
2. The sapwood, or alburnum, of a tree.