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)
Words nearby rem
reluctate, reluctivity, relume, relumine, rely, rem, rem sleep, remain, remainder, remainderman, remains
Definition for rem (2 of 4)
Origin of REM
First recorded in 1955–60
Definition for rem (3 of 4)
ad rem
[ ad rem; Latin ahd rem ]
/ æd ˈrɛm; Latin ɑd ˈrɛm /
adjective
relevant; pertinent: an ad rem remark.
adverb
without digressing; in a straightforward manner: to reply ad rem.
Origin of ad rem
< Latin: literally, to the matter
Definition for rem (4 of 4)
in rem
[ in rem ]
/ ɪn ˈrɛm /
adverb, adjective Law.
(of a legal proceeding or judgment) directed against a thing, rather than against a person, as a legal proceeding for the recovery of property.
Compare in personam.
Origin of in rem
1880–85; < Latin: literally, against (the) thing
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 4)
REM1
abbreviation for
rapid eye movement
British Dictionary definitions for rem (2 of 4)
REM2
rem
/ (rɛm) /
n acronym for
roentgen equivalent man
British Dictionary definitions for rem (3 of 4)
ad rem
/ Latin (æd ˈrɛm) /
adjective, adverb
to the point; without digressionto reply ad rem; an ad rem discussion Compare ad hominem
British Dictionary definitions for rem (4 of 4)
in rem
/ (ɪn ˈrɛm) /
adjective
law (of a judicial act) directed against property rather than against a specific personCompare in personam
Word Origin for in rem
Latin, literally: against the matter
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
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.