Definition of promontorial in English:

promontorial

adjective

rare
  • Of, relating to, or resembling a promontory.

Origin

Mid 19th century; earliest use found in George A. Sala (1828–1895), journalist. From promontory or its etymon classical Latin prōmontōrium + -al.

Pronunciation

promontorial

/ˌprɒm(ə)nˈtɔːriəl/