antinucleon

antinucleon

[an-tee-noo-klee-on, -nyoo-, an-tahy-]
noun Physics.
an antiproton or an antineutron.

Origin:
1945–50; anti- + nucleon

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World English Dictionary
antinucleon (ˌæntɪˈnjuːklɪˌɒn)
 
n
an antiproton or an antineutron

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
antinucleon   (ān'tē-n'klē-ŏn', ān'tī-)  Pronunciation Key 
The antiparticle that corresponds to a nucleon.
The American Heritage® Science Dictionary
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