say it: MEL-uh-nuhn
melanin is a noun meaning "insoluble pigments that account for the color of e.g. skin and scales and feathers". It carries one recorded sense.
insoluble pigments that account for the color of e.g. skin and scales and feathers
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 melanin 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.