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
1
apparatus
2
appendix
3
appliance
Cite this Entry
“App.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/app. Accessed 7 Jul. 2026.
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