Definition, Meaning & Synonyms

oxygen

noun
/ˈɒksɪdʒən/
Definition
Oxygen is a chemical element with the symbol O and atomic number 8. It is a colorless, odorless gas essential for life on Earth.
Examples
  • Oxygen is crucial for human survival, as we breathe it in every day.
  • The fire went out when it ran out of oxygen.
  • Plants produce oxygen during photosynthesis.
Meaning
Oxygen is a vital element that supports combustion and is necessary for respiration in living organisms.
Synonyms
  • air
  • O₂
  • breathable gas