Definition of columella
plural columellaeplay \-ˈme-(ˌ)lē, -ˌlī\
1 : the central column or axis of a spiral univalve shell
2 a : the bony or partly cartilaginous rod connecting the tympanic membrane with the internal ear in birds and in many reptiles and amphibians b : the bony central axis of the cochlea
Origin of columella
New Latin, from Latin, diminutive of columna
First Known Use: circa 1755
Medical Definition of columella
plural columellae \-ˈmel-(ˌ)ē also -ˌī\play
1: any of various anatomical parts likened to a column:a: the bony central axis of the cochleab: the lower part of the nasal septum
2: the central sterile portion of the sporangium in various fungi (Mucor and related genera)
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Medical Dictionary: Definition of "columella"
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