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Definition of O

What is the definition of O?

Here is a list of definitions for o.

  1. 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
  2. the 15th letter of the Roman alphabet
  3. 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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What are the synonyms of the word O?

What is another word for O?. Here is a list of synonyms for O.

  1. OXYGEN - What dictionaries does OXYGEN exist in?
  2. O - What dictionaries does O exist in?
  3. atomic number 8
  4. O - What dictionaries does O exist in?
  5. type O
  6. group O

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