sulfurous

Adjective

sulfurous (comparative more sulfurous, superlative most sulfurous)

1. (US) Containing sulfur.
   • It must be so—I will arise and waken
     The multitude, and like a sulphurous hill,
     Which on a sudden from its snows had shaken
     The swoon of ages, it shall burst, and fill
     The world with cleansing fire; it must, it will—
     It may not be restrained!1817 December, Percy Bysshe Shelley, “The Revolt of Islam. […]”, in [Mary] Shelley, editor, The Poetical Works of Percy Bysshe Shelley. […], volume I, London: Edward Moxon […], published 1839, →OCLC...
   • The miners slowly walked up the steep crater walls, stopping frequently while clouds of sulfurous gas blanketed the crater in the background.2015 February 25, Kevin McElvaney, “Inside Indonesia's Ijen Volcano”, in The Atlantic, archived from the original on 06 Mar 2016
2. Of, or relating to sulfur, especially in its lower oxidation state.