Where does “keyspace” come from?

keyspace (English) comes from English space, from Middle English space, from Old French espace, from Latin spatium, from Proto-Indo-European spéh₁-, from Proto-Indo-European speh₁- — to succeed, to prosper.

keyspace (English): The notional space that contains all possible...

Definitions

  1. The notional space that contains all possible...

Ancestry of “keyspace”, step by step

keyspace traces back through two separate lines of ancestry.

via English space

StepLanguageWordMeaning
1Englishspace"Of time."; "Unlimited or generalized extent,...
2Middle Englishspace
3Old Frenchespacespace; room; duration
4LatinspatiumSpace, room, extent; Distance between points; A...
5Proto-Indo-Europeanspéh₁-to succeed, to prosper
6Proto-Indo-Europeanspeh₁-to succeed, to prosper

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 speh₁-Every word from Proto-Indo-European spéh₁-Every word from Latin spatium