isotope
nounmasculinetécnico/iˈzotopu/low
i·so·to·po
Definition
A variant of a chemical element that has the same number of protons but a different number of neutrons in the nucleus.
Carbon-12 and carbon-14 are isotopes of carbon.
Radioactive isotopes are used in nuclear medicine.
Common collocations
radioactive isotopestable isotopecarbon isotope
Etymology
Do grego 'isos' (igual) + 'topos' (lugar), via inglês 'isotope'.