1. sudden strong desires or urges to act without thinking
2. electrical signals that travel through nerves or circuits
Usage: scientific
3. forces that cause motion or change
Usage: physics

Examples

• She had to resist her impulses to spend money on unnecessary items.
• His impulses often got him into trouble at school.
• The doctor explained how nerve impulses control muscle movement.
• Electrical impulses from the brain control our heartbeat.
• The rocket’s impulses propelled it toward the moon.
• He acted on impulse and bought the expensive watch.
• The impulses in the computer circuit were too weak to register.