The branch of physics that studies the nucleus of the atom, its internal structure and components.

(physics) all aspects of physics developed before the rise of quantum mechanics

As distinguished from classical physics, all physics discoveries made since approximately 1900, including relativity and quantum mechanics.

To begin to make physical contact aggressively (as part of fighting or playing sports). / To begin to make physical contact sexually (as part of sexual intercourse).

plural of physic garden

(now historical) A botanical garden where plants are grown for medicinal purposes.

(obsolete) sociology

A small tropical American euphorbiaceous tree (Jatropha curcas) with poisonous seeds, cultivated to produce biodiesel fuel.

plural of physic nut

(physics, chemistry) A change affecting the form of a chemical substance, but not its chemical composition.