millirem
/ˈmɪlɪˌrɛm/
noun
- A unit for measuring the amount of radiation absorbed by the human body, equal to one thousandth of a rem.
- Workers at the nuclear plant wear badges that track their exposure in millirems.
- The background radiation in this area is less than 100 millirems per year.
- A dental X-ray typically exposes a patient to about one millirem of radiation.