Meaning of centre of inertia | Babel Free

Definitions

1. The centre of mass.
   Canada, UK, dated, rare
2. A point, near or within a body, at which the body's mass can be assumed to be concentrated when considering its rotational motion and moment of inertia. This may be different from its centre of mass which is the equivalent for linear motion.
   Canada, UK, rare

CEFR level