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afterheat

American  
[af-ter-heet, ahf-] / ˈæf tərˌhit, ˈɑf- /

noun

Physics.

  1. the heat generated by radioactivity remaining in a nuclear reactor after it has been shut down.

afterheat British  
/ ˈɑːftəˌhiːt /

noun

  1. the heat generated in a nuclear reactor after it has been shut down, produced by residual radioactivity in the fuel elements

"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 afterheat

First recorded in 1970–75; after + heat

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.