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Columella

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• Columella
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• Columella, Junius

(1):

(n.) A columnlike axis in the capsules of mosses.

(2):

(n.) The upright pillar in the axis of most univalve shells.

(3):

(n.) The central pillar or axis of the calicles of certain corals.

(4):

(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.

(5):

(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.