Definition from Wiktionary, the free dictionary
- Rock-dwelling; living among or on rocks.
- Alpine plants that cannot establish themselves in earthy gorges, must adapt to a petricolous habit in cracks in rocks.
2004, Harold Osborne, Indians of the Andes, page 68:
- […] in the mighty Andes, this petricolous people who reared in very truth a culture of the stone […]