Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: molecular pump
  1. A vacuum pump that uses high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber.
    "Molecular pumps sweep out a larger area than mechanical pumps, and do so more frequently, making them capable of much higher pumping speeds."

Type of: air pump, vacuum pump