反はん物ぶっ質しつ

noun

antimatter

Physics term for matter composed of antiparticles. Used in scientific contexts.

• 反はん物ぶっ質しつは通つう常じょうの物ぶっ質しつと接せっ触しょくすると対つい消しょう滅めつを起おこす。

  Antimatter annihilates upon contact with ordinary matter.