\New*to"ni*an\, a.
Of or pertaining to Sir Isaac Newton, or his discoveries.
{Newtonian philosophy}, the philosophy of Sir Isaac Newton;
   -- applied to the doctrine of the universe as expounded in
   Newton's ``Principia,'' to the modern or experimental
   philosophy (as opposed to the theories of Descartes and
   others), and, most frequently, to the mathematical theory
   of universal gravitation.
{Newtonian telescope} (Astron.), a reflecting telescope, in
   which rays from the large speculum are received by a plane
   mirror placed diagonally in the axis, and near the open
   end of the tube, and thrown at right angles toward one
   side of the tube, where the image is formed and viewed
   through the eyeplace.
{Newtonian theory of light}. See Note under {Light}.

\New*to"ni*an\, n.
A follower of Newton.