Newton:



Define : A newton is a unit of force. One newton is the force needed to make an object with 1kg of mass accelerate at 1m/s/s. Force in Newtons equals the mass of an object in kilograms times it's acceleration in m/s/s.



Base or Derived:

The newton is a derived unit. One newton is the force needed to make and object with 1kg of mass accelerate at 1m/s/s. One newton is about .224809 pounds of force.


Source:

http://www.daviddarling.info/encyclopedia/N/newton_unit.html
http://www.unc.edu/~rowlett/units/dictN.html