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Definition of o

What is the definition of "o"?
  • onoun
  • 1. The 15th letter of the modern English alphabet.
    2. Any of the speech sounds represented by the letter o.
    3. The 15th in a series.
    4. Something shaped like the letter O.
    5. One of the four major blood groups in the ABO system. Individuals with this blood group have neither A nor B antigens on the surface of their red blood cells, and have both anti-A and anti-B antibodies in their blood serum.

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How to Say "o" in:
  • Spanish: o
  • German: o
  • French: o
  • Mandarin: o
  • Japanese: o

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