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IELTS word

friction

/ˈfrɪkʃn/noun

English definition

the force that resists surfaces sliding against each other

Common phrases / collocations

  1. reduce friction
  2. surface friction
  3. friction between

Example sentences

  1. 1.

    Friction between the pads and rim slowed the bike.

  2. 2.

    Oil reduces friction between moving parts.

  3. 3.

    Rough surfaces create more friction.

Visual learning

See the meaning

A close realistic view shows bicycle brake pads pressing firmly against the wheel rim as a rider squeezes the brake lever.
the force that resists surfaces sliding against each other
1brake pads press rim
2wheel slows down
brake pads press rim→wheel slows down