n.
Pronunciation: ' ī -s ə - ˌ t ō p
Function: noun
Etymology: is- + Greek topos place
Date: 1913
1 : any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
2 : NUCLIDE
– iso · to · pic \ ˌ ī -s ə - ' tä-pik, - ' t ō - \ adjective
– iso · to · pi · cal · ly \ - ' tä-pi-k( ə -)l ē , - ' t ō - \ adverb