PETRO-
Pet"ro-.
Defn: A combining form from Gr. rock, stone; as, petrology, petroglyphic.
PETROGALE
Pe*trog"a*le, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: Any Australian kangaroo of the genus Petrogale, as the rock wallaby (P. penicillata).
PETROGLYPHIC
Pet`ro*glyph"ic, a.
Defn: Of or pertaining to petroglyphy.
PETROGLYPHY
Pe*trog"ly*phy, n. Etym: [Petro + Gr.
Defn: The art or operation of carving figures or inscriptions on rock or stone.
PETROGRAPHIC; PETROGRAPHICAL
Pet`ro*graph"ic, Pet`ro*graph"ic*al, a.
Defn: Pertaining to petrography.