noun

airlock

airlock

The astronaut entered the airlock from the spaceship.

The astronaut entered the airlock from the spaceship.

((an airlock)) a small room with two airtight doors, for example on a submarine or spaceship The astronaut went through the airlock.

Synonyms: decompression chamber

From 'air' + 'lock'. A chamber that 'locks' the 'air' in or out.

Imagine a 'lock' on a canal, but for 'air' pressure, often seen in sci-fi movies on spaceships.

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