isotope
(noun) one of two or more atoms with the same atomic number but with different numbers of neutrons
Source: WordNet® 3.1
isotope (plural isotopes)
(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.
Technically, isotopes are nuclides having the same atomic number but different mass number. In practice, the term isotope is often used instead of nuclide.
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).
• pooiest, pooties
Source: Wiktionary
29 March 2025
(adjective) without care or thought for others; “the thoughtless saying of a great princess on being informed that the people had no bread; ‘Let them eat cake’”
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