air lock

noun

Definition of air lock

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

Examples of air lock in a Sentence

Recent Examples on the Web Hidden in the corner behind a zip-up air lock was Padilla-Brown’s lab. Doug Bierend, Outside Online, 10 Mar. 2021 Then, in an air lock and still suited, each will take a 10-minute shower that sprays them from all sides with a chemical detergent. New York Times, 23 Nov. 2021 Pre-pandemic, Pfizer’s Pearl River research center didn’t have a biosafety level 3 lab required to grow Covid-19 — with an air lock and scientists clothed in hooded white suits, gloves, impervious gowns, and using an air-purifying respirator. Olivia Goldhill, STAT, 30 Aug. 2021 The air lock butyl bladder is added for air retention during regular play. Chris Hachey, BGR, 21 May 2021 Passengers would arrive and depart over various cities by means of shuttle planes that would nose into a retractable air lock under the fuselage. Thomas E. Stimson, Popular Mechanics, 15 July 2021 The air lock butyl bladder is added for air retention during regular play. Chris Hachey, BGR, 21 May 2021 The air lock butyl bladder is added for air retention during regular play. Chris Hachey, BGR, 21 May 2021 The air lock butyl bladder is added for air retention during regular play. Chris Hachey, BGR, 21 May 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'air lock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of air lock

1840, in the meaning defined at sense 1

Learn More About air lock

Time Traveler for air lock

Time Traveler

The first known use of air lock was in 1840

See more words from the same year

Dictionary Entries Near air lock

air load

air lock

air locking

See More Nearby Entries 

Statistics for air lock

Last Updated

21 May 2022

Cite this Entry

“Air lock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20lock. Accessed 22 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on air lock

Britannica.com: Encyclopedia article about air lock

WORD OF THE DAY

Test Your Vocabulary

Eponyms: Words Named After People

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!