air lock

air lock


: 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.

Full Definition of AIR LOCK

:  an intermediate chamber with two airtight doors or openings to permit passage between two dissimilar spaces (as two places of unequal atmospheric pressure)
:  a stoppage of flow caused by air being in a part where liquid ought to circulate

First Known Use of AIR LOCK



Next Word in the Dictionary: air locking
Previous Word in the Dictionary: air load
All Words Near: air lock

Seen & Heard

What made you want to look up air lock? Please tell us where you read or heard it (including the quote, if possible).