Dictionary

crustose

adjective crus·tose \ˈkrəs-ˌtōs\

Definition of CRUSTOSE

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

Latin crustosus crusted, from crusta
First Known Use: circa 1879

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