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radiocesium

American  
[rey-dee-oh-see-zee-uhm] / ˌreɪ di oʊˈsi zi əm /

noun

Chemistry.

  1. cesium 137.

Etymology

Origin of radiocesium

First recorded in 1950–55; radio- + cesium

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.