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air lock

noun
1.
Civil Engineering. an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure.
2.
the impedance in the functioning of a pump or a system of piping caused by the presence of an air bubble; vapor lock.
Origin of air lock
1855-1860
1855-60

air-lock

[air-lok] /ˈɛərˌlɒk/
verb (used with object)
1.
to place in or confine to an air lock:
to air-lock divers before they descend.
Origin
1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for air lock
Historical Examples
  • It takes exactly eight turns on this valve to bleed the air out of the air lock where your two buddies are.

  • Tremont tried to grab at the edge of the air lock, but it was gone.

    Satellite System Horace Brown Fyfe
  • Tallis was just stepping into the commander's cabin as the two men entered the air lock.

    The Highest Treason Randall Garrett
  • It was already thirty feet away and the air lock was closing.

    Satellite System Horace Brown Fyfe
  • As they walked across the steel surface, back to the air lock, Tom stuck out his hand.

    Stand by for Mars! Carey Rockwell
  • He rose lazily and opened the air lock, then turned and freed her.

    A World is Born Leigh Douglass Brackett
  • The green light came on, and the door of the air lock slid open.

    Anchorite Randall Garrett
  • "You can shove your Government job on the air lock," Miles told her.

    Oomphel in the Sky Henry Beam Piper
  • A Plumie in a pressure suit just came out of their air lock.

    The Aliens Murray Leinster
  • The end of the landing ramp touched the sill of the air lock.

    The Pirates of Ersatz Murray Leinster

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