전자와 질량은 같으나 양의 전하를 가지는 아원자 입자이자 전자의 반입자.
A subatomic particle that has the same mass as an electron but possesses a positive electric charge, serving as the antiparticle of the electron.
예문:
"The positron was the first evidence of antimatter ever discovered in a laboratory setting."
"In PET scans, positrons emitted from a radioactive tracer collide with electrons to produce gamma rays."
"When a positron meets an electron, they annihilate each other, releasing energy in the process."