A chemical compound containing exactly two oxygen atoms bonded to another element or group.
From Latin 'bi-' (two) + 'oxide' (compound with oxygen). This systematic chemistry nomenclature term describes binary oxides where two oxygen atoms are present per molecule.
Carbon dioxide is a bioxide—CO₂—and this simple two-oxygen structure is why it's so stable and effective at trapping heat in our atmosphere, making the naming system more important than it seems when understanding climate science.
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