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modiolus

[moh-dahy-uh-luh s, muh-]
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noun, plural mo·di·o·li [moh-dahy-uh-lahy, muh-] /moʊˈdaɪ əˌlaɪ, mə-/. Anatomy.
  1. the central, conical axis of the cochlea of the ear.
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Origin of modiolus

1685–95; < New Latin, Latin: nave of a wheel bucket, drinking vessel, equivalent to modi(us) a dry measure (perhaps derivative of modus mode1) + -olus -ole1
Related formsmo·di·o·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for modiolus

modiolus

noun plural -li (-ˌlaɪ)
  1. the central bony pillar of the cochlea
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Word Origin

C19: New Latin, from Latin: hub of a wheel, from modus a measure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

modiolus in Medicine

modiolus

(mō-dīə-ləs)
n. pl. mo•di•o•li (-lī′)
  1. The central conical bony core of the cochlea of the ear.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.