Dentate \Den"tate\, Dentated \Den"ta*ted\, a. [L. dentatus, fr. dens, dentis, tooth.] 1. (Bot.) Toothed; especially, with the teeth projecting straight out, not pointed either forward or backward; as, a dentate leaf. 2. (Zo["o]l.) Having teeth or toothlike points. See Illust. of {Antenn[ae]}.