New·to·ni·an | \ nü-ˈtō-nē-ən 
, nyü-, -nyən \
, nyü-, -nyən \Definition of Newtonian
1 : of or relating to Sir Isaac Newton or his doctrines
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Newtonian
adjectiveNew·to·ni·an | \ n(y)ü-ˈtō-nē-ən \
\Medical Definition of Newtonian
: of, relating to, or following Sir Isaac Newton, his discoveries, or his doctrines
Newtonian dynamics
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The first known use of Newtonian was in 1676
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