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pigmental

pigmental, a.
  (pɪgˈmɛntəl)
  [f. L. pigmentum (see pigment n.) + -al1.]
  = pigmentary a. 2. Hence pigˈmentally adv.

1842 Prichard Nat. Hist. Man (ed. 2) 83 The mucous or pigmental membrane. 1886 Belgravia Mag. LIX. 353 Over⁓coloured, pigmentally and orally. 1896 Allbutt's Syst. Med. I. 114 Atrophy and pigmental degeneration (as apart from pigmental infiltration).

Oxford English Dictionary

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