rem

[rem]

noun Nucleonics.

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

Origin of rem

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

REM

[rem]

noun

rapid eye movement.

Origin of REM

First recorded in 1955–60

ad rem

[ad rem; Latin ahd rem]

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

in rem

[in rem]

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. 2018

Examples from the Web for rem

Contemporary Examples of rem

For instance, in active REM sleep, breathing and pulse may be irregular, and small muscular twitches are common.
The Tracker That Might Actually Help You Sleep Better
DailyBurn
October 17, 2014
My scores for light, deep, and REM sleep were well within normal, but I still felt sleepy in the morning.
How I Finally Got to the Bottom of My Insomnia
Gregory Ferenstein
June 26, 2014
It is the only popular consumer technology to measure both REM (which restores the mind) and deep sleep (which restores the body).
How I Finally Got to the Bottom of My Insomnia
Gregory Ferenstein
June 26, 2014
But I suppose a kind of longstanding love of specific bands would be Radiohead, Wilco, Neil Young, Tom Waits, REM.
Toni Collette on ‘The Realistic Joneses,’‘Lucky Them,’ and Crying in ‘The Sixth Sense’
Melissa Leon
June 1, 2014
The most recent service opened with the REM song “Everybody Hurts.”
Atheist Ex-Pastor Jerry DeWitt’s Mission to Red America
David Masciotra
November 17, 2013

Historical Examples of rem

He said to a senator, who was the son of a tailor, "Rem acu tetigisti."
Curiosities of Literature, Vol. 1 (of 3)
Isaac D'Israeli
Save me from the lion's mouth: for Thou hast heard me from the horns of Rem.
Bible Animals;
J. G. Wood
That the Rem was one of the two animals is certain, and that it was the larger is nearly as certain.
Bible Animals;
J. G. Wood
Id quod in rem tuam optumum esse arbitror, ted id monitum advento.
Amphitryo, Asinaria, Aulularia, Bacchides, Captivi
Plautus Titus Maccius
His nightmares ran twice: once just before bed, in clairvoyant preview, and again in the depths of REM sleep.
Someone Comes to Town, Someone Leaves Town
Cory Doctorow

British Dictionary definitions for rem

REM

abbreviation for

rapid eye movement

REM

rem

n acronym for

roentgen equivalent man

ad rem

adjective, adverb

to the point; without digressionto reply ad rem; an ad rem discussion Compare ad hominem

in rem

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

Word Origin and History for rem

"unit for measuring radiation," 1947, acronym of roentgen equivalent man.

rem in Medicine

rem

[rĕm]

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

REM

abbr.

rapid eye movement

rem in Science

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.

rem in Culture

rem

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

Note

A normal medical x-ray delivers about 0.02 rem; a fatal dose of radiation is several thousand rem.