"You canker blossom!" 3 Shakespearean Insults
Two; twice; double: dichromatic.
Containing two atoms, radicals, or groups: diiodide.
A prefix that means "two," "twice," or "double." It is used commonly in chemistry, as in dioxide, a compound having two oxygen atoms.
A drill instructor; noncommissioned officer in charge of recruits (1913+ Marine Corps)