kʌstōs

Definitions

1. adjective

Relating to or resembling a crust or crust-like growth, especially of algae or lichens on rocks or other surfaces.

“The crustose lichen colonies formed a vibrant pattern on the stone wall.”

2. noun

A type of lichen that forms a crust-like growth on rocks or other surfaces.

“The crustose lichen was found to be an essential component of the ecosystem.”