amphitropal,a.Bot.|æmˈfɪtrəpəl| [mod.f.Gr. ἀµϕί on both sides, about + -τρόπ-ος turning + -al1. Cf.mod.Fr.amphitrope.] Of an embryo: So curved as to have both apex and radicle presented to the hilum. 1847in Craig.1870Hooker Stud. Flora 64 Portulaceæ..ovules 2 or more..amphitropal, ascending.