| NOUN | substance | O, oxygen, atomic number 8 | a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas |
|---|---|---|---|
| communication | O / o | the 15th letter of the Roman alphabet | |
| body | O, type O, group O | the blood group whose red cells carry neither the A nor B antigens |
| Sounds | ow' | |
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| Meaning | The 15th letter of the Roman alphabet. | |
|---|---|---|
| Member of | Roman alphabet, Latin alphabet | The alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe |
| Broader | letter, letter of the alphabet, alphabetic character | The conventional characters of the alphabet used to represent speech |
| Catalan | o | |
| Spanish | O | |
| Meaning | The blood group whose red cells carry neither the A nor B antigens. | |
|---|---|---|
| Synonyms | type O, group O | |
| Broader | blood group, blood type | Human blood cells (usually just the red blood cells) that have the same antigens |