인체 조직에 흡수되는 이온화 방사선의 유효 선량을 나타내는 단위.
A unit of effective absorbed dose of ionizing radiation in human tissue, equivalent to the biological effect of one roentgen of X-rays.
예문:
"The technician's annual exposure was measured at less than one rem."
"Safety regulations limit the maximum permissible dose to five rems per year for nuclear workers."