1. a device or mechanism that maintains balance or equilibrium
Usage: technical; often used in engineering and aviation contexts
2. in aviation, a movable surface on an aircraft that helps maintain pitch equilibrium
Usage: aeronautical; also called a trim tab or balance tab

Examples

• The equilibrator on the aircraft wing adjusted automatically to maintain stable flight.
• Engineers designed an equilibrator to distribute weight evenly across the suspension system.
• The equilibrator helped the drone maintain its altitude despite changing wind conditions.
• Modern aircraft use electronic equilibrators to improve fuel efficiency and handling.
• The mechanical equilibrator prevented the scale from tipping under uneven loads.