poison gas

poison gas

n.

A gas or vapor used especially in chemical warfare to injure, disable, or kill upon inhalation or contact.

Thesaurus

Noun

1.

poison gas - a gas that is poisonous to breath or contact; used in chemical warfare chemical weapon - chemical substances that can be delivered using munitions and dispersal devices to cause death or severe harm to people and animals and plants gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely blistering agent, dichloroethyl sulfide, mustard agent, mustard gas, sulfur mustard - a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote nerve agent, nerve gas - a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system