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"people with type O blood are universal donors"nounthe blood group whose red cells carry neither the A nor B antigenstype of:
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nouna 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
Similar:
type of: -
nounthe 15th letter of the Roman alphabet
Antonyms of o
We don't have antonyms for this word yet.