Synonym of O&c

O

---

Noun
1. the blood group whose red cells carry neither the A nor B antigens; "people with type O blood are universal donors"
(synonym) type O, group O
(hypernym) blood group, blood type
2. 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
(synonym) oxygen, atomic number 8
(hypernym) chemical element, element
(hyponym) liquid oxygen, LOX
(substance-holonym) water, H2O
3. the 15th letter of the Roman alphabet
(hypernym) letter, letter of the alphabet, alphabetic character
(member-holonym) Roman alphabet, Latin alphabet