Where does “spacetime” come from?

Spacetime derives from English space, which comes from Middle English space, from Old French space, from Latin spatium, from Ancient Greek θέμα, ultimately from Ancient Greek τίθημι meaning "to place or set."

spacetime (English): The four-dimensional continuum of the three...

Definitions

  1. The four-dimensional continuum of the three...

Ancestry of “spacetime”, step by step

spacetime traces back through 3 separate lines of ancestry.

via English Time

StepLanguageWordMeaning
1EnglishTimeThe inevitable progression into the future with the passing of present and past events
2Middle Englishtymethyme; time; A specific duration or period of...
3Old Frenchthym
4Latinthymumthyme; accusative singular of thymus
5Ancient Greekθύμονthyme
6Ancient GreekθύωI offer in sacrifice, slay, burn, immolate; I...
7Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via German Raumzeit

StepLanguageWordMeaning
1GermanRaumzeitspacetime
2Germanraumwide; space
3Middle High Germanrūm
4Old High Germanrūm
5Proto-West Germanicrūmroomy, spacious; room, open space
6Proto-Germanicrūmazroomy, spacious, open
7Proto-Indo-Europeanrewh₁-free space

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

Words derived from “spacetime

Every word from Proto-Indo-European dʰewh₂-
spacetime — Etymology, Origin & Word History | Etymology Explorer