H0343300 (hī′drə-kär′bən)n. Any of numerous organic compounds, such as benzene and methane, that contain only carbon and hydrogen.hy′dro·car′bo·na′ceous(-bə-nā′shəs), hy′dro·car·bon′ic(-bŏn′ĭk), hy′dro·car′bon·ous(-bə-nəs) adj.EncyclopediaSeehydrocarbon