# airlock

> English word · Noun · frequency rank #45,194

## Definitions
1. A sealed, airtight chamber, such as in a manned spacecraft or submarine, used to provide access to and from the sealed area without allowing air out or water in.
2. A vestibule, foyer or entranceway with doors to the exterior on one end and doors to the interior on the other, functioning to keep indoor and outdoor air, humidity, and air temperatures separate.
3. Alternative form of air lock.

## Etymology
From air + lock.

## Common misspellings (10)
`ailrock`, `airlcok`, `airllock`, `airlocck`, `airlockk`, `airlokc`, `airolck`, `airrlock`, `arilock`, `iarlock`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/airlock