Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

lewisite

play
noun lew·is·ite \ˈlü-ə-ˌsīt\

Definition of lewisite

  1. :  a colorless or brown vesicant liquid C2H2AsCl3 developed as a poison gas for war use



Origin of lewisite

Winford L. Lewis †1943 American chemist


First Known Use: 1895


Medical Dictionary

lewisite

play
noun lew·is·ite \ˈlü-ə-ˌsīt\

Medical Definition of lewisite

  1. :  a colorless or brown vesicant liquid C2H2AsCl3 developed as a poison gas for war use



Biographical Note for lewisite

Lewis, Winford Lee (1878–1943), American chemist. As an officer in the United States Army Chemical Warfare Service during World War I, Lewis developed the poisonous gas lewisite in 1918. Later in life he did research for the Institute of American Meat Packers.


Learn More about lewisite


Seen and Heard

What made you want to look up lewisite? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a smart aleck

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

oily angry prompt maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ