isotope

Definition of abbreviation (noun) -

atoms of the same element with the same number of protons, different numbers of neutrons and therefore different mass numbers

Part of speech:

Noun

Plural: plural: isotopes

Example sentences with this word:

Elements are usually present naturally as a mixture of isotopes.

Carbon 14 is a radioactive isotope of carbon that is absorbed by all living things; the proportion of carbon 14 to other isotopes of carbon remains constant, but when something dies, the carbon 14 in it decays at a known rate, while the other isotopes stay the same.

Appears in following categories:

GRE,

PCAT,

MCAT

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