The Collaborative International Dictionary
Peritropal
Peritropal \Per*it"ro*pal\, a. [Gr. ?, fr. ? to turn around; ? around + ? to turn: cf. F. p['e]ritrope.]
Rotatory; circuitous. [R.]
Having the axis of the seed perpendicular to the axis of the pericarp to which it is attached.
Wiktionary
peritropal
a. 1 rotatory; circuitous 2 (context botany English) Having the axis of the seed perpendicular to the axis of the pericarp to which it is attached.