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afterbrain

American  
[af-ter-breyn, ahf-] / ˈæf tərˌbreɪn, ˈɑf- /

noun

  1. the metencephalon.

afterbrain British  
/ ˈɑːftəˌbreɪn /

noun

  1. a nontechnical name for myelencephalon

"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

Etymology

Origin of afterbrain

First recorded in 1605–15; after + brain

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.