rem

不可数 · 专有名词

A noun referring to a recurring sleep state characterized by rapid eye movements and vivid dreaming, or a unit of radiation dosage.

• 🇨🇳指睡眠中眼球快速运动的阶段，以做梦为特征；也指辐射剂量的单位（人体伦琴当量）。

1. Rapid Eye Movement B2 formal medical

   A recurring sleep state characterized by rapid eye movements, increased brain activity, and vivid dreaming.

   • Most dreaming occurs during REM sleep.
   • The patient entered REM sleep about 90 minutes after falling asleep.
   • Lack of REM sleep can affect memory and mood.

   🇨🇳快速眼动

   同义词: paradoxical sleeprem sleep

2. Roentgen Equivalent Man C1 formal scientific

   A unit of measurement for the biological effect of ionizing radiation on human tissue, equivalent to 1 roentgen of X-rays.

   • The radiation exposure was measured at 0.5 REM.
   • Workers in nuclear plants are monitored for their REM dose.
   • The safety limit is set at 5 REM per year for radiation workers.

   🇨🇳雷姆

• rems plural form
• rems' possessive plural form
• rem's possessive singular form