Definitions

1. noun

A subatomic particle, the antiparticle of an electron, having a positive charge and a mass equal to that of an electron.

“Physicists discovered a positron in the process, confirming their theory of antimatter.”

2. noun

The antiparticle of an electron, having a positive charge and a mass equal to that of an electron.

“The positron was created in the laboratory using a high-energy particle accelerator.”