ˈgas-ˌplant 1. A name given to the plant Dictamnus Fraxinella. In recent U.S. Dicts.[‘It is said that the atmosphere surrounding this plant is in hot dry weather inflammable’ (Lindley, School Bot., ed. 1845, p. 49).]2. The apparatus employed in the manufacture and supply of illuminating gas. 1889in Cent.Dict.