Steam up

verb

Definitions

Verb
  1. 1
    To become steamy.
  2. 2
    To become coated with condensation.

    "The bathroom mirror steamed up when he opened the shower door."

  3. 3
    To bring (a steam boiler) up to working steam pressure: to build up a head of steam inside (a boiler). transitive

    "It takes about an hour to steam up the locomotive."

  4. 4
    to build up a head of steam. intransitive

    "Engine 99 had been steaming up since 21:00."

  5. 5
    To cook by steaming. transitive

    "I'll steam up a bunch of dumplings."

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