Where does “regneregel” come from?

regneregel (Danish) comes from Danish regel, from German rēgel, from Middle High German regel, from Old High German regula, from Latin rēgula, from Latin -ula, from Proto-Indo-European -tlom, from Proto-Indo-European -trom — Derives agent nouns from verbs, denoting someone...

regneregel (Danish): a simple rule that one uses when manipulating equations, e.g. (a^b)^c=a^{bc} or ln (ab) = ln(a) + ln(b) or (ab)* = a*b*

Definitions

  1. a simple rule that one uses when manipulating equations, e.g. (a^b)^c=a^{bc} or ln (ab) = ln(a) + ln(b) or (ab)* = a*b*

Ancestry of “regneregel”, step by step

regneregel traces back through two separate lines of ancestry.

via Danish regel

StepLanguageWordMeaning
1Danishregelrule; regulation; precept
2Germanrēgelrule
3Middle High Germanregel
4Old High Germanregula
5Latinrēgularule, bar
6Latin-ularegō + API → rēgula; tegō + API → tēgula;...
7Proto-Indo-European-tlomAlternative form of *-trom
8Proto-Indo-European-tromForms nouns denoting a tool or instrument
9Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via Danish regne

StepLanguageWordMeaning
1Danishregnerain; solve, work out; estimate
2Middle Low Germanrēkenen
3Old Saxonrekenōn
4Proto-Germanicrekanōnąto count; to explain
Every word from Proto-Indo-European -tḗrEvery word from Latin -ulaEvery word from Latin rēgula