crustose

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crus·tose

 (krŭs′tōs′)
adj.
Of or relating to a lichen whose thallus is thin, crusty, and closely adherent to or embedded in the surface on which it grows.

[Latin crūstōsus, crusted, from crusta, crust; see kreus- in Indo-European roots.]

crustose

(ˈkrʌstəʊs)
adj
(Biology) biology having a crustlike appearance: crustose lichens.

crus•tose

(ˈkrʌs toʊs)

adj.
forming a crusty, tenaciously fixed mass that covers the surface on which it grows, as certain lichens.
[1875–80; < Latin crustōsus covered with a crust, derivative of crust(a) crust]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.crustose - (of lichens) having a thin crusty thallus that adheres closely to the surface on which it is growing; "crustose lichens"