Where does “Frühjahrs-Tagundnachtgleiche” come from?

Frühjahrs-Tagundnachtgleiche (German) comes from German Frühjahr, from German jahr, from German -jährig, from German -ig, from Middle High German -ic, from Old High German -ig, from Proto-West Germanic -g, from Proto-Germanic -gaz — -y, -ic.

Frühjahrs-Tagundnachtgleiche (German): spring equinox, vernal equinox

Definitions

  1. spring equinox, vernal equinox

Ancestry of “Frühjahrs-Tagundnachtgleiche”, step by step

Frühjahrs-Tagundnachtgleiche traces back through two separate lines of ancestry.

via German Frühjahr

StepLanguageWordMeaning
1GermanFrühjahrspring
2Germanjahryear solar year, the time it takes the Earth to complete one orbit of the Sun
3German-jährigyears old; years lasting
4German-ig-y; forms adjectives from nouns; forms adjectives...
5Middle High German-ic
6Old High German-ig
7Proto-West Germanic-gForms adjectives from nouns and verbs with a...
8Proto-Germanic-gaz-y
9Proto-Indo-European-ḱos-y, -ic

via German Tagundnachtgleiche

StepLanguageWordMeaning
1GermanTagundnachtgleicheequinox
2Germanundand; so?, now?, and?
3Middle High Germanunde
4Old High Germanuntiand
5Proto-Germanicandiin addition, furthermore, and
6Proto-Indo-Europeanh₂éntiopposite; near; in front
7Proto-Indo-Europeanh₂éntsforehead; front
8Proto-Indo-Europeanh₂ent-face; forehead; front
9Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Indo-European -ḱosEvery word from German -igEvery word from Proto-Germanic -gaz