noun Physics.

  1. the standard unit of force in the International System of Units(SI), equal to the force that produces an acceleration of one meter per second per second on a mass of one kilogram. Abbreviation: N


  1. Sir Isaac,1642–1727, English philosopher and mathematician: formulator of the law of gravitation.
  2. a city in E Massachusetts, near Boston.
  3. a city in central Kansas.
  4. a city in central Iowa, E of Des Moines.
  5. a male given name: a family name taken from a place-name meaning “new town.”


  1. the derived SI unit of force that imparts an acceleration of 1 metre per second to a mass of 1 kilogram; equivalent to 10 5 dynes or 7.233 poundalsSymbol: N


  1. one of the deepest craters on the moon, over 7300 m deep and about 112 km in diameter, situated in the SE quadrant


  1. Sir Isaac . 1642–1727, English mathematician, physicist, astronomer, and philosopher, noted particularly for his law of gravitation, his three laws of motion, his theory that light is composed of corpuscles, and his development of calculus independently of Leibnitz. His works include Principia Mathematica (1687) and Opticks (1704)

n.unit of force, 1904, named in honor of Sir Isaac Newton (1642-1727). n.

  1. In the meter-kilogram-second system, the unit of force required to accelerate a mass of one kilogram one meter per second per second, equal to 100,000 dynes.

  1. The SI derived unit used to measure force. One newton is equal to the force needed to accelerate a mass of one kilogram one meter per second per second. See also joule.

See Newton’s law of gravitation Newton’s laws of motion.

  1. English mathematician and scientist. He invented a form of calculus and formulated principles of physics that remained basically unchallenged until the work of Albert Einstein, including the law of universal gravitation, a theory of the nature of light, and three laws of motion. His treatise on gravitation, presented in Principia Mathematica (1687), was in his own account inspired by the sight of a falling apple.

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