- (intransitive) To become warmer.
- He came inside to warm up.
- (transitive) To heat or reheat (e.g. food).
- I couldn't be bothered to cook another meal so I just warmed up yesterday's leftovers.
- (intransitive, transitive) To reach, or cause to reach, a normal operating temperature (of a car for example).
- These old valve radios take a few minutes to warm up.
- (intransitive) To do gentle exercise, stretching etc., in order to prepare the body for more vigorous exercise.
- It is important to warm up properly before your gym session.
- (intransitive) To prepare for an activity by carrying out a practice or preparation routine.
- The band were already on stage, warming up for the gig.
- (transitive) To make (an audience) enthusiastic or animated before a show
- Rich knew how to warm up the audience of The Price is Right. His good looks and charming personality made even that special.
to become warmer
to reheat food
to reach a normal operating temperature
to stretch etc before exercise
to do some additional practice
to make an audience enthusiastic