Definition of warm up in English:

warm up

1Prepare for physical exertion or a performance by exercising or practicing gently beforehand: the band was warming up
More example sentences
  • Next, students practice warming up exercises in unison.
  • It is important that you warm up gently before you start any exercises and do not strain at all.
  • Be sure to warm up and stretch before exercising.
limber up, loosen up, stretch, work out, exercise; prepare, rehearse
1.1(Of an engine or electrical appliance) reach a temperature high enough to allow it to operate efficiently.
More example sentences
  • By this time the truck's engine has warmed up enough to allow a shift up into second gear, then third and finally fourth - or top gear.
  • This allows the engine to warm up faster, cutting exhaust emissions, and reduces fuel consumption by about 3 percent because it is not geared to the engine.
  • Check that the tyre pressures are correct, the brakes are in good working order and that the engine warms up as quickly as possible.
1.2Become livelier or more animated: after several more rounds, things began to warm up in the bar
enliven, liven, stimulate, animate, rouse, stir, excite
informal get going
See parent entry: warm

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