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air lock

Civil Engineering. an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure.
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


[air-lok] /ˈɛərˌlɒk/
verb (used with object)
to place in or confine to an air lock:
to air-lock divers before they descend.
1855-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for air-lock
Historical Examples
  • Jim leaped inside the air-lock, slammed the steel door shut, clamped it, and sprang for the quartz peer-hole.

    The Great Dome on Mercury Arthur Leo Zagat
  • Within a minute the men crowded into the air-lock, and shut the outer portal.

    The Space Rover Edwin K. Sloat
  • Five minutes later Penrun's newly acquired craft was sliding out of its air-lock in the belly of the monstrous liner.

    Loot of the Void Edwin K. Sloat
  • "Get over to that air-lock phone and say just what I tell you to," ordered Winford grimly.

    The Space Rover Edwin K. Sloat
  • Here, cover me with this till I reach the gyrocopter, then get back quick, and seal the air-lock.

    The Great Dome on Mercury Arthur Leo Zagat
  • Yet again he saw the set features, the final walk into the air-lock.

    The Space Rover Edwin K. Sloat
  • An air-lock would then facilitate a passage into the inside of the craft, where stores would be stowed.

  • My next shot will be through the nitrogen tank at your air-lock.

    Where I Wasn't Going Walt Richmond
  • One of the crewmen opened the air-lock portal while the other two jabbed Astro and Roger with ray guns.

  • The ship will be in this air-lock for some three hours plus for refueling.

    Operation: Outer Space William Fitzgerald Jenkins

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