Where does “Zwanzigflächner” come from?

Zwanzigflächner (German) comes from German zwanzig, from German Seite, from German -ig, from German -jährig, from German Jahr, from Middle High German jār, from Old High German jār, from Proto-West Germanic jār — year.

Zwanzigflächner (German): icosahedron

Definitions

  1. icosahedron

Ancestry of “Zwanzigflächner”, step by step

Zwanzigflächner traces back through 3 separate lines of ancestry.

via German zwanzig

StepLanguageWordMeaning
1Germanzwanzigtwenty
2GermanSeiteside; face, side, surface of any...
3German-ig-y; forms adjectives from nouns; forms adjectives...
4German-jährigyears old; years lasting
5GermanJahryear
6Middle High Germanjāryear
7Old High Germanjāryear
8Proto-West Germanicjāryear
9Proto-Germanicjērąyear; name of the J-rune
10Proto-Indo-Europeanyeh₁r-year

via German Flächen

StepLanguageWordMeaning
1GermanFlächenplural of Fläche; area
2German-enA suffix of verbs in their infinitive form; A...
3Middle High German-en
4Old High German-īn
5Proto-Germanic-īnaz-en
6Proto-Indo-European-iHnosCreates adjectives of materials
7Proto-Indo-European-no-adjectival suffix

via German ēr

StepLanguageWordMeaning
1Germanēr
2Middle High Germanerhe
3Old High Germanērore; brass; formerly, previously; early
4Proto-West Germaniche, it
5Proto-GermanicjīzAlternative form of *jūz
6Proto-Indo-European*yúHsyou (plural)
Every word from Proto-Indo-European yeh₁r-