electron neutrino

noun, plural e·lec·tron-neu·tri·nos. Physics.

1. a type of neutrino that obeys a conservation law together with the electron, with the total number of electrons and electron-neutrinos minus the total number of their antiparticles remaining constant.

1. A type of neutrino associated with the electron, often created in particle interactions involving electrons (such as beta decay). The electron neutrino has a mass of less than 4 X 10-6 that of an electron. See more at neutrino. See Table at subatomic particle.