isotope
See also: Isotope
English edit
Etymology 1 edit
From iso- (“equal”) + -tope (“place”), because the different isotopes of a chemical element always occupy the same position in the periodic table of elements. The term was coined by Scottish doctor Margaret Todd in 1909 and first used publicly on February 27, 1913 by English chemist Frederick Soddy.
Pronunciation edit
- (Received Pronunciation) IPA(key): /ˈaɪ.sə.təʊp/
- (US) enPR: ī'sətōp, IPA(key): /ˈaɪ.sə.toʊp/
Audio (US) (file)
Noun edit
isotope (plural isotopes)
- (nuclear 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.
Usage notes edit
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 edit
Translations edit
atoms of the same element having a different number of neutrons
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See also edit
Etymology 2 edit
Possible back-formation from isotopy.
Pronunciation edit
Verb edit
isotope (third-person singular simple present isotopes, present participle isotoping, simple past and past participle isotoped)
- (topology, transitive) To define or demonstrate an isotopy of (one map with another).
Related terms edit
Anagrams edit
French edit
Pronunciation edit
Adjective edit
isotope (plural isotopes)
Noun edit
isotope m (plural isotopes)
Descendants edit
Further reading edit
- “isotope”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
German edit
Adjective edit
isotope
- inflection of isotop:
Latin edit
Noun edit
isotope