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Oxford
N.
Any plant organism of the group Lichenes, composed of afungus and an alga in symbiotic association, usu. of green,grey, or yellow tint and growing on and colouring rocks,tree-trunks, roofs, walls, etc.
Lichened adj. (in sense 1). lichenology n. (in sense 1).lichenous adj. (in sense 2). [L f. Gk leikhen]
tác giả
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