Russian-English translations for подогре́ть

• heat up
• reheat
  I’m reheating some leftovers for dinner.
  He put the soup on the stove to reheat.
• warm up
  He came inside to warm up.
  I couldnt be bothered to cook another meal so I just warmed up yesterdays leftovers.
  These old valve radios take a few minutes to warm up.