Where does “in-app” come from?

in-app (English) comes from English app, from English application, from Middle English applicacioun, from Old French aplicacion, from Latin applicātiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

in-app (English): Done or featured in an application

Definitions

  1. Done or featured in an application

Ancestry of “in-app”, step by step

in-app traces back through two separate lines of ancestry.

via English app

StepLanguageWordMeaning
1EnglishappAn application (program), especially a small one designed for a mobile device
2EnglishapplicationThe act of applying or laying on, in a literal...
3Middle Englishapplicacioun
4Old Frenchaplicacionapplication
5Latinapplicātiōapplication, inclination
6Latin-tiōtion, -ation, -ing
7Latindissertātiō(spoken) dissertation, discourse, disquisition
8Latindissertusarranged, disposed; explained
9Latindissereresecond-person singular future passive indicative...
10Latindis-asunder, apart, in two; reversal, removal;...
11Latincalceusshoe
12Latincalxlimestone; chalk; the finish line
13Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English in

StepLanguageWordMeaning
1EnglishinUsed to indicate location, inclusion, or position...
2Middle EnglishinAny kind of accomodation; particularly; A home or...
3Old Englishinin; Alternative form of inn
4Proto-West Germanic*in
Every word from Ancient Greek χάλιξ
in-app — Etymology, Origin & Word History | Etymology Explorer