isotope

See also: Isotope

English

Etymology 1

From Ancient Greek ἴσος (ísos, “equal; same”) and τόπος (tópos, “place”), because the different isotopes of a chemical element always occupy the same position in the periodic table of elements. The term was coined in 1909 by Scottish doctor Margaret Todd and first used publicly on February 27, 1913 by English chemist Frederick Soddy.

Pronunciation

Noun

isotope (plural isotopes)

  1. (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. As a consequence, atoms of isotopes will have the same atomic number but a different mass number.
Usage notes

Technically, isotopes are nuclides having the same atomic number but different mass number. In practice, the term isotope is often used instead of nuclide.

Derived terms
Translations

See also

Etymology 2

Possible back-formation from isotopy.

Pronunciation

  • (US) IPA(key): /ˈaɪ.sə.toʊp/

Verb

isotope (third-person singular simple present isotopes, present participle isotoping, simple past and past participle isotoped)

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

Anagrams

French

Pronunciation

  • IPA(key): /i.zo.tɔp/
  • Audio (Paris)(file)

Adjective

isotope (plural isotopes)

  1. isotopic (relating to isotopes)

Noun

isotope m (plural isotopes)

  1. isotope

Further reading

German

Adjective

isotope

  1. inflected form of isotop

Latin

Noun

isotope

  1. vocative singular of isotopus
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