Quick definitions from WordNet (extensive)
▸ adjective: large in spatial extent or range ("An extensive Roman settlement in northwest England")
▸ adjective: of agriculture; increasing productivity by using large areas with minimal outlay and labor ("Producing wheat under extensive conditions")
▸ adjective: having broad range or effect ("Had extensive press coverage")
▸ adjective: large in number or quantity (especially of discourse) ("Extensive press coverage")
▸ adjective: great in range or scope ("Extensive examples of picture writing")
▸ Also see extensive
▸ adjective: large in spatial extent or range ("An extensive Roman settlement in northwest England")
▸ adjective: of agriculture; increasing productivity by using large areas with minimal outlay and labor ("Producing wheat under extensive conditions")
▸ adjective: having broad range or effect ("Had extensive press coverage")
▸ adjective: large in number or quantity (especially of discourse) ("Extensive press coverage")
▸ adjective: great in range or scope ("Extensive examples of picture writing")
▸ Also see extensive