rem
noun, adjective
rem is a noun meaning “Initialism of rapid eye movement, a sleep state” (English Wiktionary, September 2026). It is spelled R-E-M and has one syllable, and it appears 1.9 times per million words in written English (wordfreq, 2021 data). The plural of rem is rems.
What does rem mean?
noun
- 1
Initialism of rapid eye movement, a sleep state.
- 2
A non-SI unit of measure for radiation dose, measured as equivalent dose, effective dose, or committed dose, from one roentgen of X-rays or gamma rays.
- 3
A remark; a programming language statement used for documentation (in BASIC for example); also used in DOS batch files.
- 4
A unit relative to the declared font size of the root element in an HTML document.
adjective
- 1
Remaining.
noun
- 1
Initialism of rapid eye movement.
- 2
Initialism of remaining time.
- 3
A remark (programming language statement used for documentation).
- 4
Initialism of rare earth metal.
- 5
Abbreviation of reactive electrochemical membrane.
- 6
Initialism of Reference Exit Marker.
noun
- 1
colloquialA Remington firearm.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce rem?
Rem has one syllable (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of rem
- rem.
- rems plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is rem?
Rem appears 1.9 times per million words in written English, the 20,101st most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Where does rem come from?
Initialism.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).