(a.) Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline.

asperous corrugated cragged crinkled crumpled crystal crystalline gravelly gritty harsh ironbound jagged jaggy lapideous lithoid lithoidal monolithic pebbled pebbly porphyritic ragged rock-ribbed rock-strewn rock-studded rockbound rocklike rocky rugged rugose rugous sandy saw-toothed sawtooth scabrous scragged scraggly scraggy serrate serrated shingled shingly snagged snaggled snaggy stonelike stony trachytic uneven unlevel unsmooth wrinkled