Where does “self-check out” come from?

self-check out (English) comes from English Self, from Middle English salve, from Old English sealf, from Proto-West Germanic salbu, from Proto-Germanic salbō, from Proto-Indo-European solp-éh₂, from Proto-Indo-European selp- — fat, oil.

self-check out (English): To check out using a self-checkout

Definitions

  1. To check out using a self-checkout

Ancestry of “self-check out”, step by step

self-check out traces back through two separate lines of ancestry.

via English Self

StepLanguageWordMeaning
1EnglishSelfHimself, herself, itself, themself, themselves; that specific (person mentioned)
2Middle EnglishsalveAlternative form of sauf
3Old Englishsealfsalve
4Proto-West Germanicsalbusalve, ointment
5Proto-Germanicsalbōsalve, ointment
6Proto-Indo-Europeansolp-éh₂
7Proto-Indo-Europeanselp-fat, oil

via English check out

StepLanguageWordMeaning
1Englishcheck outTo confirm and pay for goods and services at a...
Every word from Proto-Indo-European selp-Every word from Proto-Indo-European solp-éh₂Every word from Proto-Germanic salbō