Substantiv
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| columella -
Any of various small structures in plants or animals that are columnar in shape.
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| columella -
The skin at the end of the septum which separates the nostrils.
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| columella -
In birds, reptiles, and amphibians, the small bone which carries vibration from the tympanum to the inner ear.
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| columella -
In gastropods, the structure at the center of the whorls of the shell.
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| columella -
The structure at the center of the calyx where the septa join together.
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| columella -
The central sterile portion of the sporangium in various fungi.
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| columella -
A rod-shaped reinforcing element of the sexine layer of a pollen grain.
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