a. [ Pref. di- + acid. ] (Chem.) Divalent; -- said of a base or radical as capable of saturating two acid monad radicals or a dibasic acid. Cf. Dibasic, a., and Biacid. [ 1913 Webster ]
(n) (Old Testament) the 2nd king of the Israelites; as a young shepherd he fought Goliath (a giant Philistine warrior) and killed him by hitting him in the head with a stone flung from a sling; he united Israel with Jerusalem as its capital; many of the Psalms are attributed to David (circa 1000-962 BC)
(n) mat-forming plant with blue and lavender flowers clustered on short erect stems; British Columbia to northern California, Syn. Penstemon davidsonii