English Dictionary

antiparticle

IPA（発音記号）

/ˈæntiˌpɑɹtɪkəl/

名詞

(physics) A subatomic particle corresponding to another particle with the same mass, spin and mean lifetime but with charge, parity, strangeness and other quantum numbers flipped in sign; a particle that has a reversed world line to another.

日本語の意味

（物理学）反粒子。すなわち、同じ質量、スピン、平均寿命を持つが、電荷やパリティ、ストレンジネスなどの量子数が反転したサブ原子粒子。

The physicist explained how every particle has a corresponding antiparticle that annihilates it on contact.

その物理学者は、すべての粒子には質量やスピンは同じで、電荷やその他の量子数が逆符号になった対応する反粒子が存在し、接触すると互いに消滅することを説明した。

意味（1）

(physics) A subatomic particle corresponding to another particle with the same mass, spin and mean lifetime but with charge, parity, strangeness and other quantum numbers flipped in sign; a particle that has a reversed world line to another.

There could be whole antiworlds and antipeople made out of antiparticles. However, if you meet your antiself, don't shake hands!

antiparticles （ plural ）