Pronunciation: (kol"yu-mel'u), [key]
—pl. -mel•laePronunciation: (-mel'ē). [key] Biol.
a. any of various small, columnlike structures of animals or plants; rod or axis.
b. Mycol.a small central column of sterile tissue within the sporangium of certain fungi, liverworts, and mosses.
2. a small bone in the ear of amphibians, reptiles, and birds.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.