burn up
phrasal verbburn up
- to be destroyed by heat
- The spacecraft burned up as it entered the earth's atmosphere.
- (usually used in the progressive tenses) (informal) to have a high temperature
- You're burning up—have you seen a doctor?
- (of a fire) to burn more strongly and with larger flames
burn somebody up
- (North American English, informal) to make somebody very angry
- The way he treats me really burns me up.
burn something up
- to get rid of or destroy something by burning
- The fire burned up 1 500 acres of farmland.
- to use calories or energy by doing exercise
- Which burns up more calories—swimming or cycling?