noun
cold sleep; suspended animation
Science-fiction term for putting a living body into a state of deep hibernation at low temperatures, often for long-distance space travel.
宇宙船の乗組員はコールドスリープに入った。
The spaceship crew entered cold sleep.
コールドスリープから目覚めた主人公
The protagonist, awakened from cold sleep, realized that hundreds of years had passed.