noun
ratio of the adjacent side to the hypotenuse of a right-angled triangle
Synonyms
noun
lettuce with long dark-green leaves in a loosely packed elongated head
Synonyms
cos lettuce
romaine
romaine lettuce
noun
an odorless very poisonous gas that is a product of incomplete combustion of carbon
Synonyms
carbon monoxide
carbon monoxide gas
CO
noun
a hard ferromagnetic silver-white bivalent or trivalent metallic element
Synonyms
Examples
- a trace element in plant and animal nutrition
noun
one who refuses to serve in the armed forces on grounds of conscience
Synonyms
conscientious objector
CO
noun
a state in west central United States in the Rocky Mountains
Synonyms
Colorado
Centennial State
CO
Colo.