[ mil-uh-rent-guhn, -juhn, -ruhnt- ]

  1. a unit of radiation equal to one thousandth of a roentgen. Abbreviation: mR, mr

Origin of milliroentgen

1950–55; milli- + roentgen

Words Nearby milliroentgen Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use milliroentgen in a sentence

  • A one-hour visit to the inner fenced area will result in a whole body exposure of one-half to one milliroentgen.

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