Meaning & use
isotope
One of two or more forms of a chemical element with the same protons but different numbers of neutrons.
See it in a sentence
Carbon-14 is a radioactive isotope used to determine the age of ancient artifacts.
Scientists use different isotopes of oxygen to trace past climate patterns in ice cores.
A note on using this word
Isotopes of an element share chemical properties but can differ in mass and radioactivity.
Words with a similar meaning
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