columella
/K AA1 L AH0 M EH1 L AH0/noun
- 1
Any of various small structures in plants or animals that are columnar in shape.
- 2
The skin at the end of the septum which separates the nostrils.
- 3
(comparative anatomy) In birds, reptiles, and amphibians, the small bone which carries vibration from the tympanum to the inner ear.
- 4
In gastropods, the structure at the center of the whorls of the shell.
- 5
The structure at the center of the calyx where the septa join together.
- 6
The central sterile portion of the sporangium in various fungi.
- 7
A rod-shaped reinforcing element of the sexine layer of a pollen grain.
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