antiproton

[ an-tee-proh-ton, an-tahy- ]

/ ˈæn tiˌproʊ tɒn, ˈæn taɪ- /

noun Physics.

an elementary particle having negative charge equal in magnitude to that of the electron and having the same mass and spin as a proton; the antiparticle of the proton.

Nearby words

antiport, antipoverty, antiproliferation, antiproliferative, antiprothrombin, antiproton, antipruritic, antipsychiatry, antipsychotic, antipyretic, antipyrine

Origin of antiproton

First recorded in 1935–40; anti- + proton

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for antiproton

antiproton

/ (ˈæntɪˌprəʊtɒn) /

noun

the antiparticle of the proton; a particle having the same mass as the proton but an equal and opposite charge

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

Science definitions for antiproton

antiproton

[ ăn′tē-prō′tŏn′, ăn′tī- ]

The antiparticle that corresponds to the proton.