lichen
Meanings
noun
- Any of many symbiotic organisms, being associations of algae and fungi, often found as white or yellow-to-blue–green patches on rocks, old walls, etc.
- Something which gradually spreads across something else, causing damage.
verb
- To cover with lichen.
Pronunciation
Word forms
Etymology
Borrowed from Latin līchēn, from Ancient Greek λειχήν (leikhḗn), from λείχω (leíkhō, “to lick”). Originally used of liverwort; the modern sense first recorded 1715.
Synonyms
Related words
Derived words
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