The process of color removal or loss; the state of being deprived of color (British English spelling).
From decolour + -ation (from Latin -atio). British English uses the -our- spelling of the root, maintaining French-influenced spelling in derived forms like 'decolouration.'
When British English 'colour' becomes part of a longer word, it keeps the 'u' in forms like 'decolouration'—but here's the twist: this isn't always consistent, which is why British spelling, despite being systematic, can feel unpredictable to learners!
Complete word intelligence in one call. Free tier — 50 lookups/day.