diencephalon

[dahy-en-sef-uh-lon]
noun, plural di·en·ceph·a·lons, di·en·ceph·a·la [dahy-en-sef-uh-luh] /ˌdaɪ ɛnˈsɛf ə lə/. Anatomy.
  1. the posterior section of the forebrain.

Origin of diencephalon

From New Latin, dating back to 1880–85; see origin at di-3, encephalon
Related formsdi·en·ce·phal·ic [dahy-en-suh-fal-ik] /ˌdaɪ ɛn səˈfæl ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for diencephalon

diencephalon

noun
  1. the part of the brain that includes the basal ganglia, thalamus, hypothalamus, and associated areas
Derived Formsdiencephalic (ˌdaɪɛnsɪˈfælɪk), 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

diencephalon in Medicine

diencephalon

[dī′ĕn-sĕfə-lŏn′, -lən]
n.
  1. The posterior part of the prosencephalon, composed of the epithalamus, the dorsal thalamus, the subthalamus, and the hypothalamus.betweenbrain interbrain
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.