Where does “upcall” come from?

upcall (English) comes from English call, from Middle English callen, from Old English ceallian, from Proto-West Germanic *kalʀōn, from Proto-Germanic kalzōną, from Proto-Germanic kalzaz, from Proto-Indo-European gols-, from Proto-Indo-European gels- — voice, cry; to call; voice, cry; to call.

upcall (English): A call from a lower-level subsystem, such as a...

Definitions

  1. A call from a lower-level subsystem, such as a...

Ancestry of “upcall”, step by step

upcall traces back through two separate lines of ancestry.

via English call

StepLanguageWordMeaning
1EnglishcallA telephone conversation; a phone call; An...
2Middle Englishcallento call
3Old Englishceallianto call; to cry out, shout
4Proto-West Germanic*kalʀōn
5Proto-Germanickalzōnąto call, shout
6Proto-Germanickalzaz
7Proto-Indo-Europeangols-
8Proto-Indo-Europeangels-voice, cry; to call; voice, cry; to call

via English up

StepLanguageWordMeaning
1EnglishupAway from the surface of the Earth or other...
2Middle Englishupto a vertical axis
3Old Englishuppup; upstairs
4Proto-West Germanic*upp
Every word from Proto-Indo-European gels-
upcall — Etymology, Origin & Word History | Etymology Explorer