o
/ˈoʊ/ · 1 syllable
Meaning
noun
- a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
- the 15th letter of the Roman alphabet
- the 15th letter of the Roman alphabet
- the blood group whose red cells carry neither the A nor B antigens
“people with type O blood are universal donors”
Synonyms for o
Words that rhyme with o
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