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WordReference Random House Unabridged Dictionary of American English © 2024col•u•mel•la (kol′yə mel′ə),USA pronunciation n., pl. -mel•lae (-mel′ē).USA pronunciation [Biol.]- Anatomy, Biology
- any of various small, columnlike structures of animals or plants; rod or axis.
- Fungi[Mycol.]a small central column of sterile tissue within the sporangium of certain fungi, liverworts, and mosses.
- Anatomy, Zoologya small bone in the ear of amphibians, reptiles, and birds.
- Latin: small column, equivalent. to colum- (variant of column-, stem of columna column) + -ella -elle
- 1575–85
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