noun

• The constriction of a plasma through which a large electric current is flowing, caused by the attractive force of the current's own magnetic field.

  ‘It also generated a convincing version of the transition from synchronized flow to a growing jam called the ‘pinch effect.’’

  More example sentences

  • ‘Mr Michael Smith and colleagues have developed a computer model that successfully reproduces the so-called ‘pinch effect’ which sparks off a jam.’