Word Study
Co
CIDE DICTIONARY
Co, n.
the chemical formula for cobalt, a ferromagnetic metal of atomic number 27. [WordNet 1.5]
OXFORD DICTIONARY
Co, abbr.
1 Commanding Officer.
2 conscientious objector.
3 US Colorado (in official postal use).
1 Commanding Officer.
2 conscientious objector.
3 US Colorado (in official postal use).
Co, symb. Chem. the element cobalt.
For further exploring for "Co" in Webster Dictionary Online