Where does “Ordnungszahl” come from?

Ordnungszahl (German) comes from German Ordnung, from Middle High German ordenunge, from Old High German ordinunga, from Old High German ordinōn, from Latin ordino, from Latin ordo, from Proto-Italic ord-on-, from Proto-Indo-European h₂er- — to fit, to fix, to put together.

Ordnungszahl (German): ordinal, ordinal number; atomic number

Definitions

  1. ordinal, ordinal number; atomic number

Ancestry of “Ordnungszahl”, step by step

Ordnungszahl traces back through two separate lines of ancestry.

via German Ordnung

StepLanguageWordMeaning
1GermanOrdnungarrangement, regulation; classification, order,...
2Middle High Germanordenunge
3Old High Germanordinunga
4Old High Germanordinōnto put in order
5LatinordinoI arrange, put in order, organize; I rule,...
6Latinordoa methodical series, arrangement, or order;...
7Proto-Italicord-on-row, order
8Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via German zahl

StepLanguageWordMeaning
1Germanzahlsingular imperative of zahlen; first-person...
2Latvianzālegrass; weed; herb
3GermanSaalhall or large room
4Middle High Germansal
5Old High Germansalhouse, hall; dwelling, house, entrance hall;...
6Proto-West Germanicsālihappiness, prosperity; proper, appropriate time
7Proto-Germanicsalizhouse; dwelling; hall; room
8Proto-Indo-Europeansol-whole
Every word from Proto-Indo-European h₂er-Every word from Proto-Italic ord-on-Every word from Latin ordo