adjective
- of, relating to, or resembling vitriol.
- obtained from vitriol.
- very caustic; scathing: vitriolic criticism.
adjective
- (of a substance, esp a strong acid) highly corrosive
- severely bitter or caustic; virulentvitriolic criticism
1660s, from French vitriolique (16c.) or from vitriol + -ic. Figurative use by 1841.