lewisite: meaning, definition, pronunciation and examples
Very LowHistorical / Highly Technical / Military-Scientific
Quick answer
What does “lewisite” mean?
A highly toxic, oily chemical warfare agent (an arsenical vesicant) first developed as a weapon.
Audio
Pronunciation
Definition
Meaning and Definition
A highly toxic, oily chemical warfare agent (an arsenical vesicant) first developed as a weapon.
A historical chemical weapon, specifically an organoarsenic compound (C₂H₂AsCl₃) causing blisters and lung damage, now considered obsolete. The term can also refer to a similar chemical compound used in research or as a reference toxicant.
Dialectal Variation
British vs American Usage
Differences
No significant regional differences in meaning or usage. Spelling is consistent.
Connotations
Identical connotations of historical warfare, extreme toxicity, and obsolete weaponry.
Frequency
Equally rare and specialised in both varieties.
Grammar
How to Use “lewisite” in a Sentence
[Noun] lewisite was developed/used[Noun] was contaminated with lewisitethe effects of [Noun] lewisiteVocabulary
Collocations
Examples
Examples of “lewisite” in a Sentence
verb
British English
- The unit was trained to decontaminate areas that had been lewisited.
- They feared the enemy would lewisite the trench system.
American English
- The protocol was to evacuate if the enemy lewisited the position.
- Historical accounts suggest they may have lewisited the village.
adjective
British English
- The lewisite contamination required a full hazmat response.
- They studied the lewisite degradation products.
American English
- The storage facility held lewisite munitions.
- A lewisite exposure requires immediate treatment with BAL.
Usage
Meaning in Context
Business
Not applicable.
Academic
Used in history, chemistry, toxicology, and military science papers discussing early 20th-century chemical weapons.
Everyday
Virtually never used.
Technical
Used in military manuals, chemical weapon treaties, decommissioning reports, and toxicology research.
Watch out
Common Mistakes When Using “lewisite”
- Misspelling as 'louisite' or 'levisite'.
- Incorrectly categorising it as a nerve agent (it is a blistering/vesicant agent).
- Assuming it is a modern threat.
FAQ
Frequently Asked Questions
No, it is considered obsolete. Modern chemical weapons treaties prohibit its use, and most stockpiles have been destroyed.
Historical accounts describe it as having a faint odour of geraniums, though this is not a reliable indicator due to its extreme toxicity.
Yes, a chelating agent called British Anti-Lewisite (BAL or dimercaprol) was developed as an antidote for arsenic-based agents like lewisite.
It is named after its American developer, Captain Winford Lee Lewis, who worked on it at the Catholic University of America in 1918.
A highly toxic, oily chemical warfare agent (an arsenical vesicant) first developed as a weapon.
Lewisite is usually historical / highly technical / military-scientific in register.
Lewisite: in British English it is pronounced /ˈluːɪsʌɪt/, and in American English it is pronounced /ˈluːɪsaɪt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think: 'LEWIS invented a SITE of blisters' — linking the inventor's name (Lewis) to the effect (creating blisters/sore sites on the skin).
Conceptual Metaphor
A HARBINGER OF PAST HORRORS (representing the terrifying but now-outdated technologies of WWI/WWII chemical warfare).
Practice
Quiz
What is the primary effect of lewisite on the human body?