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milligram-hour

American  
[mil-i-gram-ouuhr, -ou-er] / ˈmɪl ɪˌgræmˌaʊər, -ˌaʊ ər /

noun

Radiotherapy.

  1. a unit of measure for a dose of radium expressed as the amount of radiation received by exposure to one milligram of radium for one hour.

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.