Definition of vesicant in US English:



  • Tending to cause blistering.


  • An agent that causes blistering.

    • ‘Spanish Fly refers to beautiful, iridescent green insects, Cantharis vesicatoria, which contain cantharidin, which is both a vesicant (causes blisters) and a diuretic.’
    • ‘It should be further stated that this chemical known as Sanger's reagent is highly toxic, it is also a vesicant and cancer suspect agent, proper handling procedure should be strictly followed.’
    • ‘Chemical agents appear in several types: choking agents that damage lung tissue, blood agents that cause vital organs to shut down, blister agents (also known as vesicants) that damage the skin, and - most lethal - nerve agents.’
    • ‘Blister agents (vesicants) produce blisters all over your body.’
    • ‘The drugs that can cause injection site reactions are divided into 2 types: irritants and vesicants.’


Late Middle English: from late Latin vesicant- ‘forming pustules’, from the verb vesicare, from vesica ‘bladder’.