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Meaning of coleoptile

co•le•op•tile

Pronunciation: (kō"lē-op'til, kol"ē-), [key]
— n. Bot.
  1. (in grasses) the first leaf above the ground, forming a sheath around the stem tip.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.