anti-atom

British

noun

an atom composed of antiparticles, in which the nucleus contains antiprotons with orbiting positrons

"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

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anti-atom

The issue is invested with such emotion that few anti-atom groups are pressuring for research into effective alternatives to nuclear power.

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