1. devices or software programs that automatically dial telephone numbers
Usage: technology
2. people who make telephone calls, especially in telemarketing or call centers
Usage: business

Examples

• The call center uses automatic dialers to contact customers.
• Robocall dialers can make thousands of calls per hour.
• The company hired more dialers for their sales campaign.
• Modern dialers can detect busy signals and redial automatically.
• The dialers worked in shifts to cover different time zones.
• Software dialers have replaced many manual calling systems.