Artificial intelligent assistant

viridescence

viriˈdescence
  [Cf. next.]
  The quality of being viridescent.

1841 Blackw. Mag. L. 697 An artist of this school..is signalized by the flatness and viridescence of his canvass in a moment. 1912 Nation 25 May 282/2 More like potatoes than the tender viridescence that we like best. 1961 G. Durrell Whispering Land v. 123 Here were the vivid greens of the tropics, so many shades and some of such viridescence that they make the green of the English landscape look grey in comparison.

Oxford English Dictionary

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