isotope isotony • isotopic · · · Info · Definitions · Characters · · isotope · · Text Latin · · Script 7 · · Length Definitions · · · (noun) one of two or more atoms with the same atomic number but with different numbers of neutrons. · · Noun Definition 1 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074