hydrogen balloon

Questions

What does hydrogen balloon mean?

A type of gas balloon filled with hydrogen gas, and able to fly higher and further than a hot-air balloon.

How to pronounce hydrogen balloon

1. Open the pronunciation page — Open the Speakur entry for “hydrogen balloon”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “hydrogen balloon”.
4. Repeat and practice — Say “hydrogen balloon” aloud, matching stress and vowels until it feels natural.