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The Collaborative International Dictionary
Amphitropous

Amphitropal \Am*phit"ro*pal\ (-pal), Amphitropous \Am*phit"ro*pous\ (-p[u^]s), a. [Gr. 'amfi` + tre`pein to turn.] (Bot.) Having the ovule inverted, but with the attachment near the middle of one side; half anatropous. [1913 Webster] ||

WordNet
amphitropous

adj. (of a plant ovule) partly inverted; turned back 90 degrees on its stalk [ant: anatropous]