Where does “Erdaltzeit” come from?

Erdaltzeit (German) comes from German Alt, from Middle High German alt, from Old High German alt, from Proto-West Germanic ald, from Proto-Germanic aldaz, from Proto-Indo-European h₂eltós, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “Erdaltzeit”, step by step

Erdaltzeit traces back through 3 separate lines of ancestry.

via German Alt

StepLanguageWordMeaning
1GermanAltalto; A type of beer, typical to the Rhineland...
2Middle High Germanalt—
3Old High Germanaltold
4Proto-West Germanicaldold
5Proto-Germanicaldazold, grown up
6Proto-Indo-Europeanh₂eltós—
7Proto-Indo-Europeanh₂él-to grow, nourish

via German Zeit

StepLanguageWordMeaning
1GermanZeittime; time of day; period, era
2Middle High Germanzīttime
3Old High Germanzīttime
4Proto-Indo-Europeandéh₂itisinterval, period of time
5Proto-Indo-Europeandeh₂y-to share, divide
6Proto-Indo-Europeandeh₂-to share, divide

via German ërde

StepLanguageWordMeaning
1Germanërdeearth
2Middle High Germanërdeearth
3Old High GermanerdaThe Earth; earth, ground, soil
4Proto-West Germanicerþuearth, world; earth, soil
5Proto-Germanicerþōearth
6Proto-Indo-Europeanh₁er-earth
Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂eltós →Every word from Proto-Germanic aldaz →