D defs.my
Entry 2 senses Webster, 1913

Vitriolic

/vĭtˌ-rē-äl'-ĭk/ · Vit·ri·ol·ic · IPA /ˌvɪt.riˈɑ.lɪk/
01 a. Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste. Cf. Vitriol.
  1. 1.
    Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste. Cf. Vitriol.(Chem.) See: Vitriol
  2. 2.
    Biting, bitter or caustic; having or expressing strong and unpleasantly negative feelings; -- of speech or feelings; the vitriolic denunciations of opponents by partisan columnists.
Phrases & compounds
Vitriolic acid — sulphuric acid. See Vitriol (b).