isotope
//ˈaɪ.sə.toʊp//
Noun
isotopeSingular
isotopesPlural
1
One of two or more forms of a chemical element that have the same number of protons but different numbers of neutrons in their nuclei, resulting in different atomic masses.
Carbon-14 is a radioactive isotope used in dating ancient artifacts.
2
A variant form of an element used in scientific research, medical diagnostics, or dating techniques.
Scientists use carbon isotopes to determine the age of ancient artifacts.