Definition of Isaac Newton:
(N) :
Sir (25 December 1642 – 20 March 1726/27) an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author who was described in his time as a natural philosopher.
(N) :
(March 31, 1800 – June 19, 1867) an agriculturalist who became the first United States commissioner of agriculture.
(N) :
an English mathematician and physicist.