coefficient of friction is a noun meaning "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". It carries one recorded sense.
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
Definitions, synonyms and semantic relations for coefficient of friction come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.