neutron


neu·tron

noun \ˈn(y)ü-ˌträn\

Definition of NEUTRON

: an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus

Seen & Heard

What made you want to look up neutron? Please tell us where you read or heard it (including the quote, if possible).