lichen
lichen
[ˈlʌɪk(ə)n, ˈlɪtʃ(ə)n]
noun
lichened
adjective
noun
adjective
[ˈlʌɪk(ə)n, ˈlɪtʃ(ə)n]
noun
- a simple slow-growing plant which typically forms a low crust-like, leaf-like, or branching growth on rocks, walls, and trees[count noun]
地衣 - Lichens are composite plants consisting of a fungus that contains photosynthetic algal cells. Their classification is based upon that of the fungal partner, which in most cases belongs to the subdivision Ascomycotina, and the algal partners are either green algae or cyanobacteria. Lichens obtain their water and nutrients from the atmosphere and can be sensitive indicators of atmospheric pollution
- [mass noun][usu. with modifier]a skin disease in which small round hard lesions occur close together
苔藓病（一种皮肤病，患者皮肤上出现密集的小圆形坚硬伤口）
lichened
adjective
- （义项1）
noun
- （义项1）
adjective
- （义项2）
- early 17th cent.: via Latin from Greek leikhēn
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