Where does “nonnull” come from?

nonnull (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.

nonnull (English): Not null

Definitions

  1. Not null

Ancestry of “nonnull”, step by step

nonnull 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 null

StepLanguageWordMeaning
1EnglishnullA non-existent or empty value or set of values;...
2Middle Frenchnulnobody; no one; none
3Old Frenchnulnobody; no one; none
4Latinnūllusno one, none, not any, nothing
5Proto-Italicoinoscardinal number 1 Previous: n/a Next: *duō;...
6Proto-Indo-Europeanh₁óynosone
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn