milliröntgen (plural milliröntgens or milliröntgen) Alternative spelling of milliroentgen...
Appendix:Variations of "mr" mR (metrology) Symbol for milliroentgen (milliröntgen), an SI unit of radiation exposure equal to 10−3 roentgens (röntgens)...
milliröntgen mR From milli- + roentgen. milliroentgen (plural milliroentgens or milliroentgen) A unit of exposure to ionizing radiation, one thousandth...