columella

noun
col·​u·​mel·​la | \ˌkäl-yə-ˈme-lə \
plural columellae\ˌkäl-​yə-​ˈme-​(ˌ)lē, -​ˌlī \

Definition of columella 

1 : the central column or axis of a spiral univalve shell

2a : 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

Other Words from columella

columellar \ˌkäl-​yə-​ˈme-​lər \ adjective

First Known Use of columella

circa 1755, in the meaning defined at sense 1

History and Etymology for columella

New Latin, from Latin, diminutive of columna

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The first known use of columella was circa 1755

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columella

noun
col·​u·​mel·​la | \ˌkäl-(y)ə-ˈmel-ə \
plural columellae\-​ˈmel-​(ˌ)ē also -​ˌī \

Medical Definition of columella 

1 : any of various anatomical parts likened to a column:

a : the bony central axis of the cochlea

b : the lower part of the nasal septum

2 : the central sterile portion of the sporangium in various fungi (Mucor and related genera)

Other Words from columella

columellar \-​ər \ adjective
columellate \-​ˌāt, -​ət \ adjective

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