WordReference Random House Unabridged Dictionary of American English © 2026
crus•tose
(krus′tōs),USA pronunciation adj. [Bot., Mycol.]
- Fungi, Botanyforming a crusty, tenaciously fixed mass that covers the surface on which it grows, as certain lichens. Cf. foliose, fruticose.
- Latin crustōsus covered with a crust, equivalent. to crust(a) crust + -ōsus -ose1
- 1875–80
'crustose' also found in these entries (note: many are not synonyms or translations):