Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia.
Related to lewisite: British anti lewisite


A toxic gas used in warfare. It is a vesicant, a lung irritant like mustard gas; a systemic poison entering the circulation through the lungs or skin, and a mitotic poison arresting mitosis in the metaphase; dimercaprol is the antidote.
[W. Lee Lewis]
Farlex Partner Medical Dictionary © Farlex 2012
An organoarsenic compound developed as a vesicating chemical weapon, and manufactured by the US and Japan; it causes chemical burns or blisters of the skin and mucosa—e.g., conjunctiva, lacrimation, and pulmonary irritation and erosion— and liver necrosis
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


(L) (lū'is-īt)
A chemical warfare vesicant (NATO Code L) that contains arsenic; developed near the end of World War I but produced mostly in Russia.


A vesicant toxic gas used in warfare.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
By late 1918, 10 tons per day of lewisite were being produced in Cleveland, with the goal of having 3,000 tons for battlefield use by March 1, 1919.
One suffered from black spots on his skin, which was considered consistent with exposure to a blister-causing agent such as lewisite. The workers unearthed antique laboratory equipment, broken jars and a 55-gallon drum.
Blister agents (Vesicants) Phosgene oxime (CX) Sulfur musturd Nitrogen mustards Phenyldichloroarsine Lewisite Levinstein
The report, by environmental consultants Aspinwall and Company, said: "Bowes Moor was used for storage of chemical weapons mustard gas, lewisite and phosgene and the smoke agents titanium tetrachloride.
Between 1941 and 1945, the plant made more than 760 tons of poison gas, including .500 tons of the mustard-gas-like yperite, 20 tons of lewisite and three tons of cyanide.
BAL's original use was an antidote for lewisite, an arsenical chemical weapon (AAP, 1995).
An examination by the Self-Defense Forces had earlier indicated that the shells were flammable and contained yperite, better known as mustard gas, and Lewisite.
Vesicants like Mustard gas or Lewisite that cause a blistering or burn-like syndrome
It has been shown to be effective against the G and V families of nerve agents, which include Sarin (used in the Tokyo subway terrorist attack) and VX, and the H and L families of vesicants (blister agents), which include Mustard and Lewisite. Developed by the Defense Research Establishment of the Canadian Department of National Defense, the product patent is held by the Canadian government which has entered into an exclusive licensing agreement with O'Dell until the year 2010.
The Rocky Mountain Arsenal, established by the Department of Defense during World War II, was a chemical weapons manufacturing facility producing lewisite, mustard gas, and later sarin gas.
Germany has been working to inaugurate destruction at Gorny, where mustard and lewisite are stored.