[ oh-puh n-pit ]
/ ˈoʊ pənˌpɪt /

adjective Mining.

noting or pertaining to a type of surface mining in which massive, usually metallic mineral deposits are removed by cutting benches in the walls of a broad, deep funnel-shaped excavation.

Origin of open-pit

First recorded in 1910–15 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for open-pit

  • The cableway is so economical in its working that it has greatly advanced the process of "open-pit" mining.