O synonyms

ō
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An object shaped like O
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A system of antigens found on human red blood cells, together with the corresponding antibodies of these antigens: inherited antigens determine major blood types (A, B, AB, O), which help determine compatibility for blood transfusions
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the blood group whose red cells carry neither the A nor B antigens
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the blood group whose red cells carry neither the A nor B antigens
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(Medicine) A mixture of oxygen and other gases, administered to a patient to help him or her to breathe.
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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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Find another word for o. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for o, like: o, abo system, type O, group O, oxygen and atomic number 8.