melanize

/ˈmɛlənaɪz/
verb
  1. To become dark or to cause something to become dark by producing or depositing melanin.
    • The fruit will melanize after being cut if left exposed to air for too long.
    • Some insects melanize their exoskeletons as they mature.
    • Exposure to UV light can melanize human skin over time.
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What does "melanize" mean? | whatsthatwordmean | whatsthatwordmean