lichening

名词 n.

英文释义

名词 n.
  1. A covering of lichen. uncountable
    — The house was apparently very old; it had an almost prehistoric look about it, so rude and weatherbeaten was it, but the rudeness of the masonry and the lichening of the stones were no real indications of antiquity […]

词源

From lichen + -ing.
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