antineutron

[ an-tee-noo-tron, -nyoo-, an-tahy- ]

noun

, Physics.

1. an elementary particle having no charge and having a mass and spin equal to that of the neutron but with magnetic moment opposite to that of the neutron; the antiparticle of the neutron.

adjective

1. Also anti-neutron. opposing the building, stockpiling, or use of neutron bombs:

   The antineutron lobby was outnumbered.

antineutron

/ ˌæntɪˈnjuːtrɒn /

noun

1. the antiparticle of a neutron; a particle having the same mass as the neutron but a magnetic moment of opposite sign

antineutron

/ ăn′tē-no̅o̅′trŏn′,ăn′tī- /

1. The antiparticle that corresponds to the neutron.

Word History and Origins

Origin of antineutron¹

First recorded in 1940–45; anti- + neutron