A chemical element essential for respiration in living organisms.

Referring to a vital component of an environment's air quality.

वातावरण की वायु गुणवत्ता का एक महत्वपूर्ण घटक।

English Usage: The lack of oxygen in the confined space was a serious issue.

Hindi Usage: संकुचित स्थान में ऑक्सीजन की कमी एक गंभीर समस्या थी।