Definition of mountain wave in US English:

mountain wave

noun

  • 1Poetic. A mountainous wave at sea.

  • 2Meteorology. A body of turbulent air created on the lee side of a mountain when a strong wind meets it head on and is forced to rise over it.

Origin

Late 17th century; earliest use found in Nahum Tate (c1652–1715), poet, playwright, and translator. From mountain + wave.

Pronunciation

mountain wave

/ˈmaʊntɪn ˌweɪv/