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Definition of: Columella
(kol′yə·mel′ə) noun plural ·mel·lae (-mel′·ē) Biol.
A little rod, pillar, or central axis, as the central rod of the cochlea, the axial pillar of a spiral shell, etc. Also col·u·mel kol′yə·mel). [<L, dim. of columna column]
—col′u·mel′lar adjective
—col·u·mel·li·form (kol′·yə·mel′ə·fôrm) adjective
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