Definition from Wiktionary, the free dictionary
- Of or relating to Isaac Newton, or his laws and theories.
- (fluid mechanics, of a fluid) Obeying Newton's law of viscosity; i.e. having a constant viscosity.
- (physics) Of or relating to classical physics that does not take relativity into account.
Newtonian (plural Newtonians)
- A scientist supporting Isaac Newton's views on physics and mathematics.