Where does “keypair” come from?

keypair (English) comes from English pair, from Middle English paire, from Old French paire, from Latin paria, from Latin par, from Proto-Indo-European per — around; through.

keypair (English): A public key and its associated private key

Definitions

  1. A public key and its associated private key

Ancestry of “keypair”, step by step

keypair traces back through two separate lines of ancestry.

via English pair

StepLanguageWordMeaning
1EnglishpairTwo similar or identical things taken together;...
2Middle EnglishpaireA pair; a group of two similar, identical, or...
3Old Frenchpaire
4Latinparianominative neuter plural of pār; accusative...
5Latinpareven; equal; like
6Proto-Indo-Europeanperaround; through

via English key

StepLanguageWordMeaning
1EnglishkeyAn object designed to open and close a lock; An...
2EnglishcayA small, low island largely made of sand or coral
3SpanishCayokey island
4Taínocayosmall island
Every word from Proto-Indo-European per