ヘリウム
Meanings
1
helium
The chemical element helium (He). Used in balloons, airships, and as a cooling agent.
When you put helium gas into a balloon, it floats.
Helium is a colorless, odorless gas.
Usage patterns
- 〈物〉にヘリウムを入れるto fill something with helium
We filled the balloon with helium to make it float.