1. The point in a floating body (such as a ship) through which the vertical line of action of the buoyant force passes when the body is tilted slightly from its equilibrium position; used to determine stability.
Usage: nautical; technical; plural of metacentre; also spelled metacenter in U.S. English

Examples

• Naval architects calculate the metacentres of ships to ensure they remain stable in rough seas.
• The position of the metacentres relative to the center of gravity determines whether a vessel will right itself after tilting.
• Modern ship design relies on precise measurements of metacentres to prevent capsizing.
• Engineers study metacentres when designing floating platforms and offshore structures.
• The metacentres of different hull designs vary significantly, affecting their seaworthiness.