Origin of columellaModern Latin from L, diminutive of columen: see column
Origin of columellaLatin diminutive of columna column ; see column .
- (biology) Any of various small structures in plants or animals that are columnar in shape.
- (anatomy) The skin at the end of the septum which separates the nostrils.
- (comparative anatomy) In birds, reptiles, and amphibians, the small bone which carries vibration from the tympanum to the inner ear.
- (malacology) In gastropods, the structure at the center of the whorls of the shell.
- (coral science) The structure at the center of the calyx where the septa join together.
- (mycology) The central sterile portion of the sporangium in various fungi.
- (palynology) A rod-shaped reinforcing element of the sexine layer of a pollen grain.
From Latin columella (“small column”).