isotope
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isotope¹
- /ˈaɪ.sə.təʊp/ UK
- /ˈaɪ.sə.toʊp/ US
Where it comes from
From iso- (“equal”) + -tope (“place”), because the different isotopes of an element always occupy the same place in the periodic table. The term was coined by Scottish doctor Margaret Todd in 1909 and first used publicly on February 27, 1913 by English chemist Frederick Soddy.
noun isotopes
- 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.
isotope²
- /ˈaɪ.sə.toʊp/ US
Where it comes from
Possible back-formation from isotopy.
verb isotopes · isotoping · isotoped
- To define or demonstrate an isotopy of (one map with another).
Thesaurus
Closest in meaning: radioisotope, radioactive, nuclide, uranium, sodium, radioelement, radionuclide, isotopologue, isotopomer, isomer, nuclear isomer, isotone, isobar, isotope effect, isomerism, monoisotope
Translations
Every language
noun atoms of the same element having a different number of neutrons
| Español | isótopo |
|---|---|
| 한국어 | 동위 원소 dong'wi wonso |
| 日本語 | 同位体 dōitai |
| 中文 | 同位素 tóngwèisù |
| हिन्दी | समस्थानिक samasthānik |
| Português | isótopo |
| Français | isotope |
| Deutsch | Isotop |
| Italiano | isotopo |
| Ελληνικά | ισότοπο isótopo |
| Română | izotop |
| Русский | изото́п izotóp |
| Tiếng Việt | đồng vị |
| العربية | نَظِير naẓīr |
Talk about this word "isotope." Wiktionary, via Micwyn, micwyn.com/word/isotope. Accessed 6 Nov. 2026. isotope. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/isotope "isotope." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/isotope.Cite this
@misc{isotope_2026,
title = {isotope},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/isotope},
urldate = {2026-11-06}
}
