air·​tight | \ ˈer-ˌtīt How to pronounce airtight (audio) \

Definition of airtight

1 : impermeable to air or nearly so an airtight seal
2a : having no noticeable weakness, flaw, or loophole an airtight argument
b : permitting no opportunity for an opponent to score an airtight defense

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Other Words from airtight

airtightness noun

Examples of airtight in a Sentence

Store the food in an airtight container. The defendant had an airtight alibi.
Recent Examples on the Web If not serving right away, refrigerate in an airtight container. Washington Post, "Creamy hummus and broiled shrimp are the foundation for a quick dinner bowl," 13 Oct. 2020 Store at room temperature in an airtight container up to 2 weeks. Torie Cox, Country Living, "White Chocolate Peppermint Patties," 11 Oct. 2020 Store in an airtight container at room temp up to 1 week. Melt Ice Creams, Woman's Day, "Melt Ice Creams Crunchy Candied Macadamia Nuts," 9 Oct. 2020 Sealed in an airtight container, both will keep up to a week in the fridge. Charlotte Druckman, WSJ, "A Reassuring Approach to Cooking, Three Ingredients at a Time," 28 Sep. 2020 Leftover steak can be refrigerated in an airtight container for up to 3 days. Washington Post, "French Dip Pinwheels," 24 Sep. 2020 Store dehydrated herbs in a small, airtight container in a cool, dark place. Nicole Papantoniou, Good Housekeeping, "How to Store Fresh Herbs," 17 Sep. 2020 Store leftover salsa in an airtight container in the refrigerator for up to one week. Anita L. Arambula, San Diego Union-Tribune, "An elevated riff on traditional chile verde," 16 Sep. 2020 Discard the liquid from the bowl and spoon your gorgeous, tangy cream cheese off of the tea towel and into an airtight container, stirring until smooth. Amy Rosen, Bon Appétit, "Making Your Own Cream Cheese Is As Easy As Boil, Strain, Wait," 14 Sep. 2020

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

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First Known Use of airtight

1728, in the meaning defined at sense 1

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Time Traveler for airtight

Time Traveler

The first known use of airtight was in 1728

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Statistics for airtight

Last Updated

18 Oct 2020

Cite this Entry

“Airtight.” Dictionary, Merriam-Webster, Accessed 24 Oct. 2020.

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More Definitions for airtight


How to pronounce airtight (audio)

English Language Learners Definition of airtight

: tightly sealed so that no air can get in or out
: too strong or effective to fail or to be defeated


air·​tight | \ ˈer-ˈtīt How to pronounce airtight (audio) \

Kids Definition of airtight

: so tightly sealed that no air can get in or out Store the cookies in an airtight container.

More from Merriam-Webster on airtight

Thesaurus: All synonyms and antonyms for airtight

Nglish: Translation of airtight for Spanish Speakers

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