Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.
Related to tear gas: pepper spray
tear gas,gas that causes temporary blindness through the excessive flow of tears resulting from irritation of the eyes. The gas is used in chemical warfarechemical warfare,
employment in war of incendiaries, poison gases, and other chemical substances. Ancient armies attacking or defending fortified cities threw burning oil and fireballs. A primitive type of flamethrower was employed as early as the 5th cent. B.C.
..... Click the link for more information. and as a means for dispersing mobs. Compounds that cause lacrimation (watering of the eyes) include bromoacetone, benzyl bromide, chloroacetophenone, ethyl iodoacetate, chloropicrin bromobenzyl cyanide, and bromine-substituted xylenes. In warfare a lacrimating compound in liquid form is placed in bombs, shells, or grenades; when the device explodes, the liquid is dispersed as an aerosol.
tear gas[′tir ‚gas]
A substance (usually liquid) which, when atomized and of a certain concentration, causes temporary but intense eye irritation and a blinding flow of tears; chloroacetophenone is a common tear gas. Also known as lacrimator.
any one of a number of gases or vapours that make the eyes smart and water, causing temporary blindness; usually dispersed from grenades and used in warfare and to control riots