oxygen

Từ điển Oxford Advanced Learner 8th

oxy·gen BrE [ˈɒksɪdʒən] NAmE [ˈɑːksɪdʒən] noun uncountable (symb. O)
a chemical element. Oxygen is a gas that is present in air and water and is necessary for people, animals and plants to live.

Word Origin:
[oxygen] late 18th cent.: from French (principe) oxygène ‘acidifying constituent’ (because at first it was held to be the essential component in the formation of acids).

Example Bank:
•After dark the plants stop producing oxygen.
•The patient didn't seem to be getting enough oxygen.
•There was a risk the brain might be starved of oxygen.
•the blood which carries oxygen to the brain

• Từ đồng nghĩa / Synonyms:
  O, atomic number 8