trappean

Compare French trappéen. See trap (“a kind of rock”).

trappean (comparative more trappean, superlative most trappean)

1. (mineralogy) Of or pertaining to trap; of the nature of trap.
2. (geology) Relating to, or composed of basalt or other igneous rock

• trappous
• trappy

• “trappean”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• apparent