| rem | (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 |
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| rem | a recurring sleep state during which dreaming occurs |
| rem | a recurring sleep state during which dreaming occurs |
| rem | stay the same |
| rem | be left |
| rem | continue in a place, position, or situation |
| rem | stay behind |
| rem | be counted out, of a boxer: remain down while the referee counts to ten |
| rem | hold one's ground |
| rem | a piece of cloth that is left over after the rest has been used or sold |
| rem | the number that remains after subtraction |
| rem | the part of the dividend that is left over when the dividend is not evenly divisible by the divisor |