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crustose

adjective
crus·​tose | \ ˈkrə-ˌstōs How to pronounce crustose (audio) \

Definition of crustose

: having a thin thallus adhering closely to a substrate (as of rock, bark, or soil) crustose lichens — compare foliose, fruticose

First Known Use of crustose

circa 1879, in the meaning defined above

History and Etymology for crustose

Latin crustosus crusted, from crusta

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