superoxide

Noun superoxide has 2 senses

• superoxide(n = noun.substance) - a metallic oxide containing the univalent anion O2-;
is a kind of oxide

• superoxide(n = noun.substance) superoxide anion - the univalent anion O2-; "much of the O2 supporting cellular respiration is reduced to the superoxide anion O2-"
is a kind of anion