isotope
verbEtymology Possible back-formation from isotopy.
1
Mathematics, Sciences, Topology To define or demonstrate an isotopy of (one map with another).
- Derived terms
- deisotoping
- Related terms
- homotope
isotope
nounUK /ˈaɪ.sə.təʊp/ · US /ˈaɪ.sə.toʊp/
Etymology 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.
1
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.
Nuclear physics
- Derived terms
- clumped isotope, daughter isotope, deisotope, isoscape, isotope analysis, isotope dilution, isotope effect, isotope exchange, isotope geochemistry, isotope hydrology, isotope map, isotope separation, isotope shift, isotope signature, isotope table, isotopics, isotopism, isotopometry, medical isotope, monoisotope, nonisotope, radioisotope, radio-isotope