Meaning of mentum

men•tum

Pronunciation: (men'tum), [key]
— pl. -ta
  1. the medial plate of the labium in insects.
  2. a chinlike protuberance formed by the sepals and the base of the column in some orchids.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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