sulfide staining; sulphide staining
Technical term for discoloration caused by sulfide formation, often used in materials science, art conservation, or metal corrosion contexts.
To prevent sulfide staining of silver items, wipe them with a special cloth before storing.
The darkening of this painting is thought to be due to sulfide staining of the pigments.
General term for discoloration or change in color, not specific to sulfide reactions.
Refers to sulfidation or the process of combining with sulfur; 硫化変色 is the resulting staining.
Compound of 硫化 (sulfidation) and 変色 (discoloration). The exact historical derivation is uncertain; the term is a modern technical coinage.