Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The twitching movements of the eye muscles and other physiological changes that occur during REM sleep.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry rare earth metal(s).
  • noun rapid eye movement
  • noun remaining time: In music, the time remaining in a track.
  • noun computing A programming language statement used for documentation (in BASIC for example); also used in DOS batch files.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[r(apid) e(ye) m(ovement).]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Shortened from rare earth metal.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the initial letters of rapid eye movement.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Shortened from remaining.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Shortened from remark.

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