How to pronounce "o"

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Meanings and definitions of "o"

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

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Noun

the 15th letter of the Roman alphabet

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Noun

the blood group whose red cells carry neither the A nor B antigens; "people with type O blood are universal donors"

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