(physics) Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.

(topology, transitive) To define or demonstrate an isotopy of (one map with another).

plural of isotope

simple past tense and past participle of isotope

(chemistry, physics) of, or relating to isotopes

(mathematics) Of two presemifields 𝕊 and 𝕊' of characteristic p, when there exists three linear maps g_1, g_2, and g_3 from 𝕊 to 𝕊' such that g_1(x·y)=g_2(x)∘g_3(y) for all x,y∈𝕊.

With regard to isotopes

present participle of isotope

plural of isotopism

(mathematics) An instance of an isotopic state.