Definition of rupestrian in US English:

rupestrian

adjective

  • (of art) done on rock or cave walls.

    • ‘The Siega Verde rupestrian art site covers a 1.5 km area on the left bank of the Águeda River, a left tributary of the Duero River.’

Origin

Late 18th century: from modern Latin rupestris ‘found on rocks’ (from Latin rupes ‘rock’) + -an.

Pronunciation

rupestrian

/ro͝oˈpestrēən/