Breadcrumb Home > Dictionary > Index S synthesis gas: Meaning and Definition of Find definitions for: syn'thesis gas" Pronunciation: [key] — Chem. Chem. any of several gaseous mixtures consisting essentially of carbon monoxide and hydrogen, used in the synthesis of chemical compounds, as ammonia and alcohols. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. synthesis synthesize TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: foison Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language