O meaning
UK /əʊ/ US /oʊ/ 1 syllable
O (noun): 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.
O has 3 meanings in this dictionary.
O as a noun
- 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
Synonyms: oxygen, atomic number 8
Type of: chemical element, gas
Kinds: liquid oxygen
- the 15th letter of the Roman alphabet
Type of: letter
- the blood group whose red cells carry neither the A nor B antigens
- people with type O blood are universal donors
Type of: blood group
How to pronounce O
O is pronounced /əʊ/ in British English and /oʊ/ in American English. It has 1 syllable.
Words that rhyme with O
More about O on Wikipedia.