Prebreathing

Meaning
The act of breathing a specific gas, often pure oxygen, for a period before an activity like a dive
Pronunciation
UK /ˌpriːˈbriːðɪŋ/
US /ˌpriːˈbriːðɪŋ/
Example Sentences
- Spacewalk suits demand a different kind of patience, requiring hours of [prebreathing] and fitting before an astronaut can even step outside.
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