English Reference

Word

discoloration

Phoneticsdis·col·oration

US/dɪˌskəɫɝˈeɪʃən/

UK/dɪskˌʌləɹˈeɪʃən/

Countable & uncountable

Definition

n. a change in the color of something, often making it look dirty or damaged. You might see this on old paper, skin, or wood that has been left in the sun.

n. a change in the natural color of a surface or substance, typically resulting in a dull, dark, or uneven appearance. Often used in medical, forensic, or industrial contexts to describe physical degradation.

Examples

“The old map shows brown discoloration from water damage.”

“The doctor noted a slight discoloration on the patient's arm, which suggested a minor bruise from the fall.”

“Prolonged exposure to ultraviolet light can cause significant discoloration in synthetic fabrics, leading to a faded and brittle appearance that compromises the garment's structural integrity.”

Examples

simple

“The old map shows brown discoloration from water damage.”

contextual

“The doctor noted a slight discoloration on the patient's arm, which suggested a minor bruise from the fall.”

complex

“Prolonged exposure to ultraviolet light can cause significant discoloration in synthetic fabrics, leading to a faded and brittle appearance that compromises the garment's structural integrity.”

Real-World Examples

“Nail discoloration was also considerably more common, and two-thirds (66%) of users reported at least one nail disorder.”
ScienceDaily 12 Oct 2026
“It causes a skin discoloration that appears pink on light skin but gray or violet on darker skin.”
The Conversation 3 Sept 2026
“The discoloration you see as a bruise on the surface of your skin is from blood that has pooled in or under your skin.”
WebMD 28 Sept 2024

Etymology

From discolor + -ation.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

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English Reference