sünteetilisel teel toodetav gaas, mis saadakse orgaanilisest toorainest (maagaas, nafta, kivisüsi, biomass jne) ning koosneb peamiselt vesinikust (H2) ja süsinikoksiidist (CO), a generic term for raw gas produced by the steam reforming or partial oxidation of hydrocarbon feedstock (coal, natural gas, oil, biomass etc); consists primarily of hydrogen (H2) and carbon monoxide (CO)