\ˈap \

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

Subscribers: Update your PCWorld app to the latest version today! Pcworld Staff, PCWorld, "PCWorld's December Digital Magazine: Google Pixel 3 XL review," 5 Dec. 2018 Good planning is the key to a successful road trip, and that starts with mapping out your route, looking at your weather app, and checking National Traffic and Road Closure Information. Brigitt Earley, Woman's Day, "6 Ways to Stay Safe on Your Next Family Road Trip," 29 Nov. 2018 Delta, for example, offers the feature consistently via both its app and website for even the smallest of delays, as do numerous other airlines. Eric Jordan, Condé Nast Traveler, "What to Do When Your Flight Is Canceled or Delayed," 20 Nov. 2018 Meanwhile, for younger kids, the PBS Kids video and game apps are gold. Nadine Jolie Courtney, Redbook, "Genius Ways to Keep Your Kids Busy on Road Trips," 16 Aug. 2018 According to Hopper, the app tends to spot the most deals on this day in 2016 and 2017. Shannon Liao, The Verge, "Today is ‘Travel Deal Tuesday,’ apparently, and it’s a good day to save on flights," 27 Nov. 2018 Every item can be purchased through the app too, which eliminates check-out lines. Steff Yotka, Vogue, "Two Very Big Reasons You Should Do Your Holiday Shopping in Midtown Manhattan," 20 Nov. 2018 To keep up with our podcast each week, subscribe to Travelogue on Spotify, the iTunes store, or the podcasting app of your choice. Cnt Editors, Condé Nast Traveler, "How to Survive Holiday Travel With the Kids: Travelogue Podcast," 16 Nov. 2018 The app works just like the website, with the content available for free after logging in with your cable provider info. Temi Adebowale, Country Living, "How to Watch and Stream Hallmark Christmas Movies Any Time You Want," 26 Oct. 2018

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

15 Dec 2018

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Time Traveler for app

The first known use of app was in 1981

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More Definitions for app



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

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a nest or breeding place

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