| Chemistry. producer gas. |
| a gas composed of carbon monoxide, hydrogen, and nitrogen, obtained by passing air and steam through incandescent coke: used as an industrial fuel, in certain gas engines, and in the manufacture of ammonia. |
| air gas n. See producer gas. |
| producer gas n. A combustible mixture of nitrogen, carbon monoxide, and hydrogen, generated by passing air with steam over burning coke or coal in a furnace and used as fuel. Also called air gas. |
