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carbon monoxide▼(chemical of the formula CO)noun[UK: ˈkɑː.bən.mɒ.ˈnɒk.saɪd] [US: ˈkɑː.bən.mɒ.ˈnɒk.saɪd]
carbon dioxide▼(CO₂)noun[UK: ˈkɑː.bən daɪ.ˈɒk.saɪd] [US: ˈkɑːr.bən daˈjɑːk.ˌsaɪd]
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