rem

[ rem ]
/ rɛm /

noun Nucleonics.

the quantity of ionizing radiation whose biological effect is equal to that produced by one roentgen of x-rays.

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Origin of rem

1945–50; r(oentgen)e(quivalent in)m(an)

Definition for rem (2 of 2)

REM
[ rem ]
/ rɛm /

noun

Origin of REM

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for rem

British Dictionary definitions for rem (1 of 2)

REM1

abbreviation for

rapid eye movement

British Dictionary definitions for rem (2 of 2)

REM2

rem

/ (rɛm) /

n acronym for

roentgen equivalent man
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for rem (1 of 2)

rem
[ rĕm ]

n.

The amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays.

Medical definitions for rem (2 of 2)

REM

abbr.

rapid eye movement
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for rem

rem
[ rĕm ]

The amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays. The rem has been replaced in most scientific contexts by the sievert.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for rem

rem

An acronym for roentgen equivalent man. A unit of absorbed doses of radiation.

notes for rem

A normal medical x-ray delivers about 0.02 rem; a fatal dose of radiation is several thousand rem.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.