peritropal

from The Collaborative International Dictionary of English v.0.48

Peritropal \Per*it"ro*pal\, a. [Gr. ?, fr. ? to turn around;
   peri` around + ? to turn: cf. F. p['e]ritrope.]
   1. Rotatory; circuitous. [R.]
      [1913 Webster]

   2. Having the axis of the seed perpendicular to the axis of
      the pericarp to which it is attached.
      [1913 Webster]