radioisotope
English Thesaurus
1. a radioactive isotope of an element; produced either naturally or artificially (noun.substance)
hypernym | : | isotope, |
definition | : | one of two or more atoms with the same atomic number but with different numbers of neutrons (noun.substance) |
hyponym | : | tracer, |
definition | : | (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes (noun.artifact) |
hyponym | : | label, |
definition | : | a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction (noun.substance) |
hyponym | : | iodine-131, |
definition | : | heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter (noun.substance) |
hyponym | : | iodine-125, |
definition | : | light radioactive isotope of iodine with a half-life of 60 days; used as a tracer in thyroid studies and as a treatment for hyperthyroidism (noun.substance) |
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