say it: di-skuhl-ur-AY-shuhn
discoloration is a noun meaning "a soiled or discolored appearance". It carries 2 recorded senses.
a soiled or discolored appearance
“the wine left a dark stain”
the act of changing the natural color of something by making it duller or dingier or unnatural or faded
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for discoloration come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.