Dictionary.com

thermonuclear

[ thur-moh-noo-klee-er, -nyoo- or, by metathesis, -kyuh-ler ]
/ ˌθɜr moʊˈnu kli ər, -ˈnyu- or, by metathesis, -kyə lər /
Save This Word!

adjective
of, relating to, or involving a thermonuclear reaction: thermonuclear power.
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of thermonuclear

First recorded in 1935–40; thermo- + nuclear

how to pronounce thermonuclear

See nuclear.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use thermonuclear in a sentence

British Dictionary definitions for thermonuclear

thermonuclear
/ (ˌθɜːməʊˈnjuːklɪə) /

adjective
involving nuclear fusiona thermonuclear reaction; thermonuclear energy
involving thermonuclear weaponsa thermonuclear war
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

Scientific definitions for thermonuclear

thermonuclear
[ thûr′mō-nōōklē-ər ]

Relating to the fusion of atomic nuclei at high temperatures or to the energy produced in this way.
Relating to weapons based on nuclear fusion, especially as distinguished from those based on nuclear fission.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for thermonuclear

thermonuclear

A term referring to devices that use nuclear fusion, the fusion of atomic nuclei, to produce energy at very high temperatures. (See hydrogen bomb.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK