The Collaborative International Dictionary
Petrean
Petrean \Pe*tre"an\ (p[-e]*tr[=e]"an), a. [L. petraeus, Gr.
petrai^os, fr. pe`tra a rock.]
Of or pertaining to rock.
--G. S. Faber.
Wiktionary
petrean
a. Composed of rock or stone; rocky, stony. alt. Composed of rock or stone; rocky, stony.