1. The amount of fuel used up (as in a nuclear reactor)
   "The engineers carefully monitored the burnup rate of the reactor's fuel rods"
    
2. [Brit] A high-speed motorcycle race on a public road
   "The illegal burnup attracted thrill-seekers despite the dangers"

1. Burn completely; be consumed or destroyed by fire
   "The hut burned up";
   - burn down, go up
    
2. Burn brightly
   "The campfire burned up against the night sky";
   - flare, flame up, blaze up
    
3. Use up (energy)
   "burn up calories through vigorous exercise";
   - burn off, burn

Derived forms: burned up, burning up, burnups, burns up

Type of: burn, combust, consume, consumption, deplete, eat, eat up, exhaust, expend, expenditure, race, run through, use, use up, using up, wipe out

Encyclopedia: Burnup