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Meaning of columella

col•u•mel•la

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