Homotropal \Ho*mot"ro*pal\, Homotropous \Ho*mot"ro*pous\, a. [Gr. ?; ? the same + ? turn, fr. ? to turn: cf. F. homotrope.] 1. Turned in the same direction with something else. [1913 Webster] 2. (Bot.) Having the radicle of the seed directed towards the hilum. [1913 Webster]