\ 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

The Kardashian sisters shut down their apps in December, so this could definitely be a reboot of the oldest K-sis—her website even says keep a look out for what's coming in 2019. Elizabeth Gulino, House Beautiful, "Wait...Is Kourtney Kardashian Finally Giving Us a Home Decor Line?!," 5 Mar. 2019 Tapping my weather app wasn’t holding me back from something important. Alexander George, Popular Mechanics, "A Computer Scientist's Guide To Dumping the Needless Tech In Your Life," 25 Feb. 2019 But email folders make sense now, and my apps are all updated, save for a few deletions (my sincere apologies to HQ and Pokémon GO). Lauren Sanchez, Vogue, "How I KonMari’d My Inbox (and My Desktop, and My Phone)," 28 Jan. 2019 The first episode is already available on Syfy's website and on their app. Tamara Fuentes, Seventeen, "Everything We Know About Lana Condor's New Show "Deadly Class"," 4 Jan. 2019 And unlike Ken, Tricky just shows up in your podcast app of choice. Ars Staff, Ars Technica, "A few of our favorite podcasts in 2018, from new to new-to-us," 23 Dec. 2018 Shoppers can browse products online before visiting the gallery and are even able to use the 1stdibs smartphone app to scan items for more details. Monique Valeris, ELLE Decor, "1stdibs Just Opened a Stunning NYC Gallery," 14 Feb. 2019 These services make the process of dealing with cryptocurrencies less about long alphanumeric addresses and QR codes to something more like Venmo or a banking app. Alexander George, Popular Mechanics, "Crypto Exchange Founder's Untimely Death Leaves $190 Million Locked Away in Limbo," 4 Feb. 2019 The Voice enthusiasts have the option to download a free, official app from the iTunes App Store or Google Play to vote for their favorite contestants each week during the live shows. Kelly O'sullivan, Country Living, "'The Voice' Live Playoffs Were Plagued With Technical Problems," 13 Nov. 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

10 Mar 2019

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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

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


to corrupt or become corrupted

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