Noun | 1. | ![]() natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics" modulus - (physics) a coefficient that expresses how much of a specified property is possessed by a specified substance bulk modulus - the ratio of the change in pressure acting on a volume to the fractional change in volume modulus of rigidity - the coefficient of elasticity for a shearing force Young's modulus - a coefficient of elasticity applicable to the stretching of a wire |