ORTHOTROPOUS

orthotropous

(adjective) (of a plant ovule) completely straight with the micropyle at the apex

Source: WordNet® 3.1

Etymology

Adjective

orthotropous (not comparable)

(botany, of an ovule) Growing straight and having the micropyle at the apex

Antonyms

• anatropous

Source: Wiktionary

Or*thot"ro*pal, Or*thot"ro*pous, a. Etym: [Ortho- + Gr. orthotrope.] (Bot.)

Definition: Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.

Note: This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum.

Source: Webster’s Unabridged Dictionary 1913 Edition