An odorless very poisonous gas that is a product of incomplete combustion of carbon.

synoniemen: carbon monoxide, carbon monoxide gas.

Nederlands: kolendamp, koolmonoxide
Pools: tlenek węgla, czad

A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

synoniemen: atomic number 27, cobalt.

Nederlands: kobalt
Pools: Co, kobalt

One who refuses to serve in the armed forces on grounds of conscience.

synoniem: conscientious objector.

Nederlands: gewetensbezwaarde

A state in west central United States in the Rocky Mountains.

synoniemen: Centennial State, Colo., Colorado.

Nederlands: Colorado