The Collaborative International Dictionary
Sulphuration
Sulphuration \Sul`phu*ra"tion\, n. [Cf. F. sulfuration, L. sulphuratio, sulfuratio, a vein of sulphur.] The act or process of combining or impregnating with sulphur or its compounds; also, the state of being so combined or impregnated.
Wiktionary
sulphuration
n. (alternative form of sulfuration English)