1. to control or maintain something according to rules or laws
2. to adjust something to work properly or at the desired level

Examples

• The government regulates the banking industry.
• New laws regulate emissions from factories.
• The thermostat regulates the temperature in the house.
• She needs to regulate her sleep schedule.
• The FDA regulates food safety standards.
• This valve regulates water pressure.
• Parents should regulate their children’s screen time.