Definition of melanize in US English:

melanize

(also melanise)

verb

Biology
  • 1with object To subject to melanization; to cause the production or accumulation of melanin in or around (especially as a physiological defence mechanism in insects).

  • 2no object To undergo melanization; to darken as a result of melanin formation.

Origin

1960s. From melano- + -ize, after melanized and melanization.

Pronunciation

melanize

/ˈmɛlənʌɪz/