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(1) (APPlication) The file extension for executable Mac applications. See APP file.

(2) (APPlication) The term has been shorthand for "application" in the IT community for a long time. However, it became popular with the consumer for mobile applications after Apple debuted the iPhone in 2008. Application and app are synonymous, and it is just as correct to say "iPhone application" as it is "desktop computer app." App is shorter, and computer people love to abbreviate (see TLA). See application and online app store.

(3) (APPlication) In the engineering world, an app can refer to a circuit design, using the word "application" in the context of purpose. For example, "high-voltage apps" means high-voltage circuit designs. The term predates mobile software apps by decades.

Apps Are Everywhere
After installing a new smart TV, as in this Samsung 4K TV example in 2016, users have the option of downloading apps from Netflix, Amazon and other content providers.

We Do Mean "Everywhere"
For decades the word "apps" has been shorthand for "appetizers" and still is.
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References in periodicals archive ?
If the app isn't visible from the app launcher window, it can be made visible by opening Settings, pressing on Digital Wellbeing, and then turning "Show Icon In App List" on.
In Malaysia, in 2015, the Penang Green Council developed an app to encourage citizens of Penang stateto do waste segregation and recycling in the hope that the app will familiarisepeople with the practice.
The design of the app should be such that each and everything right from the icon design to navigation impresses the user in the first attempt.
Another set of fake finance apps has found its way into the official Google Play store.
App stores run by other companies, including Baidu and Tencent, are also required to remove banned foreign content and gambling apps.
It noted that in the fourth quarter of 2017 alone, Chinese app users spent roughly 225 billion hours using apps, which is 4.5 times longer than in India, the next largest market, which clocked close to 50 billion hours in 2017.
This announcement came back in May during the company's F8 Developer conference and at the event, the company set August 1 as the deadline for businesses and developers to submit their apps again for review under the new guidelines.
The researchers evaluated both the functionality and appearance of the copycat apps compared to the original app.
The investigators used the descriptions written by the app developers rather than downloading the app.
First, consider the context of the app by determining basic facts, such as who made it, how much it costs, and its technology requirements.
The most interesting advantage of a hybrid app is, with one codebase a developer can build an app that is compatible with more than one platform.