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mesencephalon

[mes-en-sef-uh-lon, -luh n, mez-]
noun, plural mes·en·ceph·a·la [mes-en-sef-uh-luh, mez-] /ˌmɛs ɛnˈsɛf ə lə, ˌmɛz-/, mes·en·ceph·a·lons.
  1. Anatomy. the midbrain.
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Origin of mesencephalon

First recorded in 1840–50; mes- + encephalon
Related formsmes·en·ce·phal·ic [mes-en-suh-fal-ik, mez-] /ˌmɛs ɛn səˈfæl ɪk, ˌmɛz-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for mesencephalon

mesencephalon

noun
  1. the part of the brain that develops from the middle portion of the embryonic neural tubeNontechnical name: midbrain Compare prosencephalon, rhombencephalon
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Derived Formsmesencephalic (ˌmɛsɛnsɪˈfælɪk), adjective
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
mesencephalon in Medicine

mesencephalon

(mĕz′ĕn-sĕf′ə-lŏn′)
n.
  1. The portion of the vertebrate brain that develops from the middle section of the embryonic brain.midbrain
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.