(chemistry) Alternative form of sulfo-; used before a vowel.

(uncountable) A chemical element (symbol S) with an atomic number of 16. / (countable, uncountable) A yellowish green colour, like that of sulfur.

Of a yellowish green colour, like that of sulfur.

(transitive) To treat with sulfur, or a sulfur compound, especially to preserve or to counter agricultural pests.

(American spelling, inorganic chemistry) A transparent, oily liquid, formula H₂SO₄, that is a strong acid with very many industrial applications.

Of or containing sulfonamide or sulfanilamide.

A sulfonamide or sulfanilamide.

(American spelling, chemistry) Any compound of sulfur and a metal or other electropositive element or group.

(inorganic chemistry) The weak acid, H₂SO₃, present in a solution of sulfur dioxide in water; it is a reducing agent and mild bleach.

(American spelling, inorganic chemistry) Any salt of sulfurous acid.