Where does “þversumma” come from?

þversumma (Icelandic) comes from Icelandic summa, from Latin summa, from Latin summus, from Proto-Italic supemos, from Proto-Indo-European (s)úp-m̥mo-s, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

þversumma (Icelandic): a digit sum, a transverse sum

Definitions

  1. a digit sum, a transverse sum

Ancestry of “þversumma”, step by step

StepLanguageWordMeaning
1Icelandicsummaa sum
2Latinsummatop, summit, highest point or place; the...
3Latinsummushighest, greatest, the most high; top, on top
4Proto-Italicsupemos—
5Proto-Indo-European(s)úp-m̥mo-s—
6Proto-Indo-Europeanupóunder, below
7Proto-Indo-Europeanh₃ewp-—
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Indo-European (s)úp-m̥mo-s →