The Collaborative International Dictionary
Homotropous
Homotropal \Ho*mot"ro*pal\, Homotropous \Ho*mot"ro*pous\, a. [Gr. ?; ? the same + ? turn, fr. ? to turn: cf. F. homotrope.]
Turned in the same direction with something else.
(Bot.) Having the radicle of the seed directed towards the hilum.
Wiktionary
homotropous
a. (context botany English) Displaying, of, or pertaining to homotropy.