cavernulous
/kəˈvəːnjʊləs
/adjective rare
(Of rock or other material) full of minute cavities; porous.The remaining mass was rugged and cavernulous....
- Copper will not cast either solid or tenacious, but is cavernulous and weak.
- The two species have the same open, cavernulous, skeleton structure.
Origin
Mid 18th century: from Latin cavernula, diminutive of caverna 'cavern' + -ous.