Large-scale means involving many people or a wide area. A large-scale survey.
Confusingly, a large-scale map shows a small area in great detail. Large-scale in ordinary use means big, and in map-making it means the opposite of that.
1adjectivelarge-scaleInvolving many people or a wide area.
“The large-scale trial ran in four countries at once.”
large-scale is a quality.
From large + scale.
Etymology from Wiktionary, CC BY-SA