ISOTOPY
Meaning of ISOTOPY in English
/uy sot"euh pee, uy"seuh toh'pee/ , n. Chem.
the quality or condition of being isotopic; isotopic character.
[ 1915-20; ISOTOPE + -Y 3 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012