'large-scale' definitions:

Definition of 'large-scale'

(from WordNet)
adjective
Unusually large in scope; "a large-scale attack on AIDS is needed"
adjective
Constructed or drawn to a big scale; "large-scale maps"

Definition of 'large-scale'

From: GCIDE
  • large-scale \large-scale\ adj.
  • 1. large in area, scope or degree; as, a large-scale attack on AIDS is needed.
  • Syn: extensive, wide-ranging. [WordNet 1.5]
  • 2. constructed or drawn to a big scale[4]; as, large-scale maps. See 3rd scale, n., sense 4. [WordNet 1.5]
  • 3. widespread; applying to all or most members of a category or group.
  • Syn: mass. [WordNet 1.5 +PJC] Largess