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Added 9 October 2026

blackening

verb

verb Definition from Wiktionary (CC BY-SA). More about blackening at Wordnik → Where our words come from →

present participle and gerund of blacken

noun

The act or process of turning (becoming) black in colour.
The result or an instance of such an act or process; a black stain or mark.
Any of various (dark-colored) surface treatments for metal substrates, to inhibit corrosion.

Origin

From blacken + -ing.

From Wiktionary, via Kaikki.org (CC BY-SA)

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