\ ˈap How to pronounce app (audio) \

Definition of app

 (Entry 1 of 2)

1 : application sense 3 a word processing app especially : an application designed for a mobile device (such as a smartphone) Health-insurance companies and government officials alike are drawn to the ability of smartphone apps to reach tough-to-access patients, to effect long-term lifestyle changes, and to do it all at a very low cost. — Marcellus Hall — see also killer app
2 informal : appetizer … the hidden video monitors that tell the cooks when the V.I.P.'s have finished their apps— Thomas McNamee

Definition of app (Entry 2 of 2)

1 apparatus
2 appendix
3 appliance

Examples of app in a Sentence

Recent Examples on the Web: Noun

Clue, a popular app that women use to track their periods, recently rose to the top of the App Store charts. Cat Zakrzewski, Washington Post, "The Technology 202: YouTube settlement raises questions about Washington's ability to rein in Silicon Valley," 5 Sep. 2019 Their paychecks are signed by hundreds of companies, but often Amazon directs, through an app, the order of the deliveries and the route to each destination. Patricia Callahan, New York Times, "The Human Cost of Amazon’s Fast, Free Shipping," 5 Sep. 2019 Check the Podcast, Netflix and Amazon Prime app, which stores downloads and doesn't get rid of them. Jefferson Graham, USA TODAY, "A new iPhone is coming. But no, you don't really have to pay new-phone prices," 4 Sep. 2019 Its popularity has also pushed another face-swap app, Yanji, to fifth place on the list. Colum Murphy And Zheping Huang / Bloomberg, Time, "Social Media Users Entranced, Concerned by Chinese Face-Swapping Deepfake App," 4 Sep. 2019 After months of exchanging messages on the app, as through text messages and Snapchat, the two agreed to meet up for lunch. Adam Ferrise,, "Cleveland cop fired after being convicted of misusing police database to search girl he sent lewd photo," 4 Sep. 2019 One such app, FireChat, played an important role in Hong Kong’s 2014 democracy protests. Matthew De Silva, Quartz, "Hong Kong protestors are once again using mesh networks to preempt an internet shutdown," 3 Sep. 2019 The company has also put controls into the app, such as the capability to make certain data fields unchangeable after certain stages of the work are done. J.d. Morris,, "PG&E tells judge it’s improving tree trimming around power lines," 3 Sep. 2019 Its popularity has also pushed another face-swap app, Yanji, to fifth place on the list. Colum Murphy, Los Angeles Times, "China’s red-hot face-swapping app provokes privacy concern," 2 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'app.' 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 app


1981, in the meaning defined at sense 1

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Statistics for app

Last Updated

8 Sep 2019

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Time Traveler for app

The first known use of app was in 1981

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English Language Learners Definition of app

computers : a computer program that performs a special function

Medical Definition of app

 (Entry 1 of 2)


Medical Definition of APP (Entry 2 of 2)

amyloid precursor protein

Legal Definition of App


More from Merriam-Webster on app

Nglish: Translation of app for Spanish Speakers

Britannica English: Translation of app for Arabic Speakers

Comments on app

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


miscellaneous remnants or debris

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