ves·i·cant 
(vĕsĭ-kənt)
(vĕsĭ-kənt)n.
A blistering agent, especially mustard gas, used in chemical warfare.
adj.
Causing blisters.
- extracranial
- extract
- extractable
- extractible
- extraction
- extractive
- extractively
- extractor
- extracurricular
- extraditable
- extradite
- extradition
- extrados
- extraembryonic
- extragalactic
- extrahepatic
- extra-high voltage
- extrajudicial
- extrajudicially
- extralegal
- extralegally
- extramarital
- extramundane
- extramural
- extraneous