mustard gas

noun

Definition of mustard gas

:an irritant vesicant oily liquid C4H8Cl2S used especially as a chemical weapon

First Known Use of mustard gas

1917


MUSTARD GAS Defined for English Language Learners

mustard gas

noun

Definition of mustard gas for English Language Learners

  • : a poison gas used as a weapon in a war


Medical Dictionary

mustard gas

noun

medical Definition of mustard gas

:an irritant oily liquid C4H8Cl2S used especially as a chemical weapon that causes blistering, attacks the eyes and lungs, and is a systemic poison called also dichlorethyl sulfide, sulfur mustard

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