Where does “uplock” come from?

uplock (English) comes from English up-, from Middle English up-, from Old English ūp-, from Old English ūp, from Proto-Germanic upp, from Proto-Germanic ub, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

uplock (English): A mechanism that secures an aircraft's landing...

Definitions

  1. A mechanism that secures an aircraft's landing...

Ancestry of “uplock”, step by step

StepLanguageWordMeaning
1Englishup-Used to indicate increase; Used to indicate...
2Middle Englishup-—
3Old Englishūp-up-
4Old Englishūpup, from above
5Proto-Germanicuppup, upwards
6Proto-Germanicubunder
7Proto-Indo-Europeanupóunder, below
8Proto-Indo-Europeanh₃ewp-—
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Germanic ub →
uplock — Etymology, Origin & Word History | Etymology Explorer