- (n.) The central pillar or axis of the calicles of certain corals.
- (n.) The upright pillar in the axis of most univalve shells.
- (n.) A columnlike axis in the capsules of mosses.
- (n.) A term applied to various columnlike parts; as, the columella or epipterygoid bone, in the skull of many lizards; the columella of the ear, the bony or cartilaginous rod connecting the tympanic membrane with the internal ear.
- (n.) An axis to which a carpel of a compound pistil may be attached, as in the case of the geranium; or which is left when a pod opens.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). columella. Retrieved September 25, 2026, from http://smartdefine.org/columella/definitions/1989184 |
| Chicago | Webster's. 2011. "columella" http://smartdefine.org/columella/definitions/1989184 (accessed September 25, 2026). |
| Harvard | Webster's 2011, columella, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/columella/definitions/1989184>. |
| MLA | Webster's. "columella" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/columella/definitions/1989184> |