IPA: /ˈpɒzɪtrɒn/
KK: /ˈpɒzɪtrɒn/
A tiny particle that is similar to an electron but has a positive charge instead of a negative charge.
In particle physics, a positron is often produced in certain types of radioactive decay.
Positron is formed from "posit-" (from Latin "positus", meaning placed or positioned) and "-ron" (a suffix used in particle physics to denote a subatomic particle). The word "positron" refers to a subatomic particle that is the antiparticle of the electron, essentially a particle that is positioned in opposition to the electron.
Think of 'posit-' meaning 'placed' or 'positioned' — the positron is a particle that is positioned as the opposite of an electron.