Simple Definition of friction
: the act of rubbing one thing against another
: the force that causes a moving object to slow down when it is touching another object
: disagreement or tension between people or groups of people
Full Definition of friction
1 a : the rubbing of one body against another b : the force that resists relative motion between two bodies in contact
2 : the clashing between two persons or parties of opposed views : disagreement
3 : sound produced by the movement of air through a narrow constriction in the mouth or glottis
Examples of friction in a sentence
the friction of sandpaper on wood
Oil in a car engine reduces friction.
It was difficult to reach an agreement because of the friction between the two sides.
Origin of friction
earlier, therapeutic rubbing of the limbs, from Middle French, from Latin friction-, frictio, from fricare to rub; akin to Latin friare to crumble, and perhaps to Sanskrit bhrīṇanti they injure
First Known Use: 1704
FRICTION Defined for Kids
Definition of friction for Students
1 : the rubbing of one thing against another
2 : resistance to motion between bodies in contact <Oiling the parts of the machine reduces friction.>
3 : disagreement among persons or groups
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