Or*thot"ro*pal (?), Or*thot"ro*pous (?), a. [Ortho- + Gr. to turn: cf. F. orthotrope.] Bot.
Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.
⇒ This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum.
© Webster 1913.