joft-e elektron-pozitron (#)
Fr.: paire électron-positron
The antiparticle of the electron, which has the same mass, spin, and charge as the electron, but the charge is positive. Positrons may be generated by radioactive decay or by pair production from energetic gamma photons.
A short-lived bound state of a positron and an electron.
From → positron + -ium (as in barium, titanium), from N.L., from L. neuter suffix.