Definition of "millirem" [millirem]

• One thousandth (10-3) of a rem. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "A millirem is a thousandth of a rem, the basic unit used to measure radiation doses in the United States."
• ""The exposure was an average of about 25 millirem, which is a couple of chest X-rays.""
• "Radiation exposure is often measured in units called "millirem," which is 1/1000 of a rem."