Search Result for "coefficient of friction":
Wordnet 3.0

NOUN (1)

1. the ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface; 



WordNet (r) 3.0 (2006):

coefficient of friction
    n 1: the ratio of the weight of an object being moved along a
         surface and the force that maintains contact between the
         object and the surface