The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1 e, a spin of ½, and has the same mass as an electron. When a low-energy positron collides with a low-energy electron,  annihilation occurs, resulting in the production of two or more gamma ray photons (see electron–positron annihilation).

Positron Records is an independent record label based in Chicago, Illinois. The label was founded in 1998 by Chris Randall, frontman of the industrial band Sister Machine Gun. Positron describes itself as an "anti-label" because they release only a handful of albums and give as much support to each release as they can. The label also features a Creative Commons license for some of its albums, allowing individuals to upload those songs to peer-to-peer websites as well as sample parts of those songs for private or commercial usage.