Large-scale (adjective)

1. Involving many people or things and covering a wide area or dealing with a lot of details.
2. Of a size, amount, or degree that is larger than usual or than what is typical.

Origin:

Large-scale is combination of the word large and scale. where large means big and scale means size, amount or degree.

Examples:

1. The project was a large-scale undertaking.
2. The operation was a large-scale one.
3. The event was a large-scale production.
4. The study was a large-scale one.
5. The company was a large-scale enterprise.