a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
teaching during sleep (as by using recordings to teach a foreign language to someone who is asleep)
a natural and periodic state of rest during which consciousness of the world is suspended
a torpid state resembling deep sleep
euphemisms for death (based on an analogy between lying in a bed and in a tomb)
be able to accommodate for sleeping
a period of time spent sleeping
a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
(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
