rem has definitions from the fields of physics,medicine
1
[ noun ] (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

Related terms

radioactivity_unit

2
[ noun ] (medicine) a recurring sleep state during which dreaming occurs; a state of Rapid Eye Movements during sleep

Related terms

sleep

3
[ noun ] (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

Related terms

radioactivity_unit

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