1. making something start working or become active
Usage: present participle of activate

1. having the power to make something active or start working

Examples

• She is activating the alarm system before leaving.
• The scientist is activating the chemical reaction with heat.
• Activating your account requires email verification.
• The activating agent caused the mixture to foam.
• He’s activating the emergency protocol right now.
• The activating sequence begins at midnight.
• They are activating new security measures today.