1. devices that control or maintain the rate or speed of a machine or system
2. people or organizations that supervise and control an activity or industry

Examples

• The pressure regulators ensure safe gas flow in the laboratory.
• Temperature regulators maintain optimal conditions in the greenhouse.
• Financial regulators monitor banks to prevent fraud.
• Government regulators set safety standards for food production.
• The voltage regulators protect electronic equipment from power surges.
• Environmental regulators enforce pollution control laws.
• Market regulators investigate insider trading violations.