midbrain

[ mid-breyn ]
/ ˈmɪdˌbreɪn /

noun Anatomy.

the middle of the three primary divisions of the brain in the embryo of a vertebrate or the part of the adult brain derived from this tissue; mesencephalon.

Origin of midbrain

First recorded in 1870–75; mid- + brain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for midbrain

midbrain

/ (ˈmɪdˌbreɪn) /

noun

the nontechnical name for mesencephalon
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

Medicine definitions for midbrain

midbrain

[ mĭdbrān′ ]

n.

mesencephalon
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for midbrain

midbrain

[ mĭdbrān′ ]

The middle part of the vertebrate brain. In most animals except mammals, the midbrain processes sensory information. In mammals, it serves primarily to connect the forebrain with the hindbrain. Compare forebrain hindbrain.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.