sulphureous /-fūˈri-əs/ adjective

1. Sulphury
2. Sulphur-yellow

sulphuˈreously adverb

sulphuˈreousness noun

sulˈphuret /-fū-ret/ noun (obsolete)

A sulphide

To impregnate, treat or combine with sulphur

sulˈphuretted adjective

Combined with sulphur

sulphuˈric adjective

Containing sulphur in relatively high valency (cf sulphurous)

sulphurizaˈtion or sulphurisaˈtion noun

sulˈphurize or sulˈphurise transitive verb

To sulphurate

sulˈphurous /-fūr- or -fər-/ adjective

1. Relating to, resembling or containing sulphur
2. Containing sulphur in relatively low valency (chem) /-fūˈrəs/
3. Of or relating to hellfire, infernal, satanic
4. Fiery
5. Blasphemous

sulphury /sulˈfər-i/ adjective

Like sulphur

sulphur bacteria plural noun

Bacteria that liberate sulphur from hydrogen sulphide, etc and ultimately form sulphuric acid

sulˈphur-bottom noun

The blue whale (from the yellowish spots on its underside)

sulphur dioxide noun

A pungent, colourless, non-flammable gas, SO₂, formed when sulphur burns, a major pollutant when discharged into the atmosphere in waste from industrial processes and used in the manufacture of sulphuric acid, in bleaching, disinfecting and preserving

sulphuretted hydrogen noun

Hydrogen sulphide

sulphuric acid noun

Oil of vitriol, a very corrosive acid, H₂SO₄, an important heavy chemical used extensively in industry

sulphurous acid noun

An unstable acid, H₂SO₃, used as a food preservative and bleaching agent

sulˈphur-root or sulˈphurwort noun

An umbelliferous plant (various species of Peucedanum) akin to parsnip, with yellow flowers and juice

sulphur trioxide noun

A corrosive substance, SO₃, the anhydride of sulphuric acid

sulphur tuft noun

A poisonous fungus (Hypholoma fasciculare) with a yellowish cap