hydrocarbonic,a.Chem.|-kɑːˈbɒnɪk| [f. hydrocarbon + -ic.] Relating to, or of the nature of, a hydrocarbon; in quot., obtained from carburetted hydrogen: see prec. 1. 1807F. A. Winsor in Standard (1883) 19 July 5/6 His grand discovery of the Hydrocarbonic Lights.