noun Etymology: probably from neutral Date: 1932 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, ~ic adjective
NEUTRON
Meaning of NEUTRON in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012