adjective
- of, relating to, or consisting of trap rock (a dark igneous rock)
Usage: geological
Examples
- The trappean formations in the region date back millions of years.
- Geologists studied the trappean rocks for evidence of ancient volcanic activity.
- The cliff face showed distinct trappean layers from successive lava flows.
- Trappean terrain is characterized by its dark, dense rock composition.
- The quarry extracted trappean stone for construction purposes.