lichens

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
  2. noun any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.

Synonyms

lichen

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