Where does “nondual” come from?

nondual (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.

nondual (English): Not dual; not pertaining to philosophical duality

Definitions

  1. Not dual; not pertaining to philosophical duality

Ancestry of “nondual”, step by step

nondual 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 dual

StepLanguageWordMeaning
1EnglishdualCharacterized by having two (usually equivalent) components
2Latinduālisdual
3Latinduōtwo; 2
4Proto-Italicduōtwo
5Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →