The study of isotopes, especially stable isotopes.

Misspelling of isotopic.

(chemistry) The study of the effects of isotopic substitution on chemical compounds, especially on the kinetics of their reactions.

(physics) a small difference in the transition energies of isotopes that corresponds to a given spectral line transition

(chemistry) any technique that involves the addition to a sample of an isotopically labelled compound

(chemistry) Any technique that involves the addition to a sample of an isotopically labelled compound.

An isotopic signature

(physics, chemistry) A set of ratios of the abundances of different isotopes of specified elements in a sample, used as a diagnostic test of the sample's origin, or of its age

plural of isotope dilution

plural of medical isotope