milliroentgen

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

noun

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

Word History and Origins

Origin of milliroentgen¹

1950–55; milli- + roentgen

Example Sentences

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

From Project Gutenberg