radioisotope

[ rey-dee-oh-ahy-suh-tohp ]

/ ˌreɪ di oʊˈaɪ səˌtoʊp /

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noun

a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.

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Origin of radioisotope

First recorded in 1940–45; radio- + isotope

OTHER WORDS FROM radioisotope

ra·di·o·i·so·top·ic

[rey-dee-oh-ahy-suh-top-ik], /ˌreɪ di oʊˌaɪ səˈtɒp ɪk/, adjective

Words nearby radioisotope

radioimmunology, radioimmunoprecipitation, radio interferometer, radioiodine, radioiron, radioisotope, radio knife, radiolabel, radioland, radiolarian, radiolesion

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use radioisotope in a sentence

One of the biggest would be maintaining its power source—an array of radioisotope thermoelectric generators, or what amount to nuclear batteries—on such a long journey.
Why NASA should visit Pluto again|Tatyana Woodall|July 19, 2021|MIT Technology Review

British Dictionary definitions for radioisotope

radioisotope

/ (ˌreɪdɪəʊˈaɪsətəʊp) /

noun

an isotope that is radioactive

Derived forms of radioisotope

radioisotopic (ˌreɪdɪəʊˌaɪsəˈtɒpɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for radioisotope

radioisotope

[ rā′dē-ō-ī′sə-tōp′ ]

A naturally or artificially produced radioactive isotope.

Scientific definitions for radioisotope

radioisotope

[ rā′dē-ō-ī′sə-tōp′ ]

A radioactive isotope of a chemical element. Carbon 14 and radon 222 are examples of naturally occurring radioactive isotopes.