Lewisite

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An organoarsenic compound used as a chemical weapon. uncountable

Synonyms

All synonyms
ammoniacarbon dioxidegasnitrogenoxygen

Etymology

From Lewis + -ite. Named after American chemist and soldier Winford Lee Lewis.

Related phrases

chemical weapon

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.