/thuy'oh yoo ree"euh, -yoor"ee euh/ , n. Chem.
a colorless, crystalline, bitter-tasting, water-soluble solid, CH 4 N 2 S, derived from urea by replacement of the oxygen with sulfur: used chiefly in photography, inorganic synthesis, and to accelerate the vulcanization of rubber. Also called thiocarbamide .
[ 1890-95; ]