carbon dioxide · noun U /ˌkɑː.bən.dɑɪˈɒk.sɑɪd/
carbon dioxide
B2 the gas formed when carbon is burned, or when people or animals breathe out
Dictionary example:
carbon dioxide emissions
Learner example:
If we use up carbon dioxide with balloon clothes there will be less carbon dioxide on Earth, so there is no worry about [the] Ozone. (First Certificate in English; B2; Japanese)
