Where does “nonbreaking” come from?

nonbreaking (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

nonbreaking (English): Alternative spelling of non-breaking

Definitions

  1. Alternative spelling of non-breaking

Ancestry of “nonbreaking”, step by step

nonbreaking traces back through two separate lines of ancestry.

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single

via English breaking

StepLanguageWordMeaning
1Englishbreakingpresent participle of break; The act by which...
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn