பொருள் : A recurring sleep state during which dreaming occurs. A state of rapidly shifting eye movements during sleep.
ஒத்த சொற்கள் : paradoxical sleep, rapid eye movement, rapid eye movement sleep, rem sleep
பொருள் : (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.