水蒸気
Meanings
1
water vapor; steam
Refers to water in its gaseous state, especially when invisible or mixed with air. In everyday use, it can also refer to visible steam, though 湯気 is more common for visible steam from hot water.
Water vapor in the air cools and turns into water droplets.
Steam is rising from the kettle.
Usage patterns
- 〈物〉が水蒸気になるfor something to turn into water vapor
Water turns into vapor when heated.
- 水蒸気を含むto contain water vapor
Summer air contains a lot of water vapor.
- 水蒸気が発生するfor water vapor to be generated
When you boil water, water vapor is generated.
- 水蒸気が凝結するfor water vapor to condense
The water vapor condensed on the cold window glass into droplets.