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air lock

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noun
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.
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Origin of air lock

First recorded in 1855–60

Other definitions for air lock (2 of 2)

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.

Origin of air-lock

First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use air lock in a sentence

British Dictionary definitions for air lock

airlock
/ (ˈɛəˌlɒk) /

noun
a bubble in a pipe causing an obstruction or stoppage to the flow
an airtight chamber with regulated air pressure used to gain access to a space that has air under pressure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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