noun The branch of science concerned with the study of the properties and interactions of space, time, matter and energy.
Newtonian physics was extended by Einstein to explain the effects of travelling near the speed of light; quantum physics extends it to account for the behaviour of atoms.
noun The physical aspects of a phenomenon or a system, especially those examined or studied scientifically.
The physics of car crashes would not let Tom Cruise walk away like that.
noun plural of physic
verb third-person singular simple present indicative of physic