REM n 1: a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep [syn: {paradoxical sleep}, {rapid eye movement sleep}, {REM sleep}, {rapid eye movement}, {REM}] 2: (Roentgen Equivalent Man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays
REM <programming> (From "remark") The {keyword} used in {BASIC} to introduce a {comment} (which continues to the end of the line). {MS-DOS} probably borrowed it from {BASIC}. Might be used in the form "REM out" meaning to {comment out}. (1998-04-27)