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

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1839.  Cheltenham Looker-on, 7 Dec., 13/1. Among these, shining with brilliant viridescence as signs of approaching Christmas, the beautiful tribe of MOSSES appear, called in botanical language Musci frondosi.

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1841.  Blackw. Mag., L. 697. An artist of this school … is signalized by the flatness and viridescence of his canvass in a moment.

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1912.  Nation, 25 May, 282/2. More like potatoes than the tender viridescence that we like best.

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