Definition of "telencephalon" []

• The anterior portion of the forebrain, constituting the cerebral hemispheres and related parts. Also called endbrain. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "This was the telencephalon, whose principal part was the neocortex, a dense rind of nerve fibers about an eighth of an inch thick that was simply molded over top of the existing mammal brain."
• "In the telencephalon-the new brain-the floral similarity increases."
• "Enhanced telencephalon olfactory lobes…hammerheads can smell a droplet of blood a mile away."