app

1 of 2

noun

ˈap 

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

app

2 of 2

abbreviation

1

apparatus

2

appendix

3

appliance

Examples of app in a Sentence

Recent Examples on the Web

Noun

First, locate the radiant to the left of the waning moon using a handy smartphone stargazing app. —Anthony Wood, Space.com, 2 May 2026

That also means that any data those apps collect isn’t stored or protected to the same standards as actual medical records or patient files. —Alan Henry, PC Magazine, 1 May 2026

The live show is viewable on the Amazon Music channel on Twitch as well as the Amazon Music app and Prime Video. —Chris Willman, Variety, 1 May 2026

The Aéropostale x Formula 1 capsule collection is available now online at the retailer’s website and in-app and in-store at all Miami retail locations. —Kanika Talwar, Footwear News, 1 May 2026

Word History

First Known Use

Noun

1981, in the meaning defined at sense 1

Phrases Containing app

• killer app

Rhymes for app

• cap
• chap
• clap
• crap
• flap
• frap
• gap
• hap
• lap
• nap
• nappe
• pap

Kids Definition

app

noun

ˈap

1

: application sense 6

2

informal : appetizer

Medical Definition

app

1 of 2 abbreviation

appendix

APP

2 of 2 abbreviation

amyloid precursor protein

Legal Definition

App

abbreviation

Appeals