noun, noun which may take the genitive case particle 'no', noun or participle which takes 'suru'
blackening; turning black
Describes the process or state of something becoming black, often due to chemical reaction, burning, or spoilage. Used as a noun, no-adjective, or suru-verb.
銀製品は空気に触れると黒変することがある。
Silver items may blacken when exposed to air.
この食
This food turns black over time.