Where does “dualling” come from?

dualling (English) comes from English ing, from Middle English ing, from Old English ing, from Old Norse eng, from Proto-Germanic angijō, from Proto-Indo-European h₂énkos, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

dualling (English): The conversion of a road into a dual carriageway

Definitions

  1. The conversion of a road into a dual carriageway

Ancestry of “dualling”, step by step

dualling traces back through two separate lines of ancestry.

via English ing

StepLanguageWordMeaning
1EnglishingA meadow, especially a low meadow near a river;...
2Middle Englishing
3Old Englishingmeadow, water meadow, ing
4Old Norseengmeadow
5Proto-GermanicangijōA low lying meadow in a valley or near a river
6Proto-Indo-Europeanh₂énkoscurve, bend
7Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English dual

StepLanguageWordMeaning
1EnglishdualCharacterized by having two (usually equivalent) components
2Latinduālisdual
3Latinduōtwo; 2
4Proto-Italicduōtwo
5Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European -osEvery word from Proto-Indo-European h₂énkosEvery word from Proto-Germanic angijō