'Nigrification' definitions:

Definition of 'Nigrification'

From: GCIDE
  • Nigrification \Nig`ri*fi*ca"tion\, n. [L. nigrificare to blacken; niger black + -ficare (in comp.) to make. See -fy.] The act or process of making black. [R.] --Johnson. [1913 Webster]