Where does “nonfallout” come from?

nonfallout (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.

nonfallout (English): Not of or pertaining to radioactive fallout

Definitions

  1. Not of or pertaining to radioactive fallout

Ancestry of “nonfallout”, step by step

nonfallout 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 fallout

StepLanguageWordMeaning
1EnglishfalloutThe event of small airborne particles falling to...
2Englishfall"To be moved downwards."; "To move downwards.";...
3Middle Englishfall—
4Old EnglishfeallAlternative form of fiell
5Proto-Germanicfallą—
6Proto-Indo-European(s)pōl-to fall
Every word from Proto-Indo-European óynos →