transmountain

adjective
trans·​moun·​tain | \ ˌtran(t)s-ˈmau̇n-tᵊn How to pronounce transmountain (audio) , ˌtranz-\

Definition of transmountain

: crossing or extending over or through a mountain a transmountain road a transmountain tunnel

First Known Use of transmountain

1929, in the meaning defined above

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