Inertial mass
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The mass of an object measured as its resistance to being accelerated by an applied force; it is equal to its gravitational mass. countable, uncountable
- 2 (physics) the mass of a body as determined by the second law of motion from the acceleration of the body when it is subjected to a force that is not due to gravity wordnet