antiparticle
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.an·ti·par·ti·cle
noun \ˈan-tē-ˌpär-ti-kəl, ˈan-ˌtī-\Definition of ANTIPARTICLE
: a subatomic particle identical to another subatomic particle in mass but opposite to it in electric and magnetic properties (as sign of charge) that when brought together with its counterpart produces mutual annihilation; especially : a subatomic particle not found in ordinary matter
See First Known Use of ANTIPARTICLE
1934
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