antiparticle
/ˈæntiˌpɑrtɪkəl/
noun
- A subatomic particle that has the same mass as another particle but opposite electrical charge or other properties, and that can annihilate the other particle upon contact.
- When a particle meets its antiparticle, they annihilate each other.
- The positron is the antiparticle of the electron.
- Scientists study antiparticles to understand the early universe.
Antonyms