Definition of coefficient of friction in English:

coefficient of friction


  • The ratio between the force necessary to move one surface horizontally over another and the pressure between the two surfaces.

    ‘It appears that this more subtle effect accounts for the low coefficient of friction of icy surfaces.’
    • ‘Nylon gears and other moving parts have low coefficients of friction and excellent wear-resistance and impact and tensile strengths.’
    • ‘In fact, the thickness of the oil determines its coefficient of friction and defines four distinct regions of lubrication.’
    • ‘The coefficient of friction and other aerodynamic aspects in aircraft are more important than simply miles per gallon.’
    • ‘Such mills have large diameter rolls with surfaces that are roughened or ragged to increase the coefficient of friction.’