air lock

noun
a chamber that provides access to space where air is under pressure
Syn: ↑airlock
Hypernyms: ↑chamber

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noun
1. : an air space with two airtight doors or openings for permitting entrance to or exit from a sealed-off space under pressure (as a ship's stokehole) or vacuum: as
a. : an intermediate chamber between the outer air and the working chamber of a pneumatic caisson
b. : the chamber in an electron microscope between outer air and inner vacuum
c. : the entrance chamber to a gas-proof shelter
2. : a stoppage of flow (as in a pumping device) caused by air being in a part where liquid ought to circulate — compare vapor lock

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1. Civ. Eng. 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.
[1855-60]

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air lock,
1. an airtight compartment between places where there is a difference in air pressure. The pressure in an air lock can be raised or lowered.
2. a decompression chamber.
3. the blocking of a liquid's flow, as through a tube, caused by the presence of air.

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noun, pl ⋯ locks [count]
: a small room that has two doors which can be sealed tightly so that no air enters or leaves and that is used for moving between two spaces with different air pressures in a submarine, spaceship, etc.

Useful english dictionary. 2012.

Look at other dictionaries:

  • Air lock — Air Air ([^a]r), n. [OE. air, eir, F. air, L. a[ e]r, fr. Gr. ah r, air, mist, for a[digamma]hr, fr. root a[digamma] to blow, breathe, probably akin to E. wind. In sense 10 the French has taking a meaning fr. It. aria atmosphere, air, fr. the… …   The Collaborative International Dictionary of English

  • air-lock — /air lok /, v.t. to place in or confine to an air lock: to air lock divers before they descend. [1855 60] * * * …   Universalium

  • air lock — air′ lock n. 1) civ an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure 2) mac an impedance in the functioning of a pump or a system of piping caused by the presence of an air… …   From formal English to slang

  • air lock — n. 1. an airtight compartment, with adjustable air pressure, between places that do not have the same air pressure, as between the working compartment of a caisson and the outside 2. a blockage, as in a water pipe, caused by trapped air …   English World dictionary

  • air lock — n 1.) a small room used for moving between two places that do not have the same air pressure, for example in a spacecraft 2.) a small amount of air in a pipe that stops liquid flowing through it …   Dictionary of contemporary English

  • air lock — 1. Civ. Eng. 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… …   Universalium

  • Air lock — An air lock is gas trapped in a high point of a liquid filled pipe system. The gas, being lighter than the liquid, rises to the highest point and restricts the flow of liquid. In very tall systems, the gas can prevent flow entirely.Flushing the… …   Wikipedia

  • air-lock — ˈ ̷ ̷ˌ ̷ ̷ transitive verb Etymology: air lock : to stop (a flow) by an air lock …   Useful english dictionary

  • air lock — i. A stoppage or diminution of flow in a fuel system, hydraulic system, or the like caused by a pocket of air or vapor. Often called vapor lock. ii. A chamber capable of being hermetically sealed that provides for passage between two places of… …   Aviation dictionary

  • air lock — Synonyms and related words: aboideau, access, adit, approach, corridor, dock gate, entrance, entranceway, entry, entryway, flood hatch, floodgate, gangplank, gangway, gate, hall, head gate, in, ingress, inlet, intake, lock, lock gate, means of… …   Moby Thesaurus


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