Definition of "prosencephalon" []

• The forebrain. (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.

• "Two smaller divisions of the prosencephalon are the diencephalon and telencephalon."
• "All this may therefore be referred to as the prosencephalon {pros'en-sef'uh-lon; "forebrain" G)."
• "These are marked off from each other by intervening constrictions, and are named the fore-brain or prosencephalon, the mid-brain or mesencephalon, and the hind-brain or rhombencephalon—the last being continuous with the medulla spinalis."