Definition of petroglyphic in US English:

petroglyphic

adjective

Anthropology Archaeology
  • Belonging to or of the nature of a petroglyph.

Origin

Late 19th century; earliest use found in Ogilvie's Imperial Dictionary. From petroglyph + -ic.

Pronunciation

petroglyphic

/ˌpɛtrə(ʊ)ˈɡlɪfɪk/