PORPHYRA'CEOUS, adjective [See Porphyry.] Pertaining to porphyry; resembling porphyry.
1. Containing or composed of porphyry; as porphyraceous mountains.
Webster's Dictionary 1828
PORPHYRA'CEOUS, adjective [See Porphyry.] Pertaining to porphyry; resembling porphyry.
1. Containing or composed of porphyry; as porphyraceous mountains.