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app

1
[ap]
noun Computers.
  1. an application, typically a small, specialized program downloaded onto mobile devices: the best GPS apps for your iPhone.
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Origin of app

1
1985–90; shortening of application

app

2
[ap]
noun
  1. Informal. an appetizer served before a meal.
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Origin of app

2
by shortening

app.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for app

app

noun
  1. computing informal short for application program
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for app

n.

computerese shorthand for application, attested by 1992.

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Online Etymology Dictionary, © 2010 Douglas Harper