Where does “ヌル” come from?

ヌル (Japanese) comes from English null, from Middle French nul, from Old French nul, from Latin nūllus, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

ヌル (Japanese): null

Definitions

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Ancestry of “ヌル”, step by step

Step	Language	Word	Meaning
1	English	null	A non-existent or empty value or set of values;...
2	Middle French	nul	nobody; no one; none
3	Old French	nul	nobody; no one; none
4	Latin	nūllus	no one, none, not any, nothing
5	Proto-Italic	oinos	cardinal number 1 Previous: n/a Next: *duō;...
6	Proto-Indo-European	óynos	one; single

Every word from Proto-Indo-European óynos →Every word from Proto-Italic oinos →Every word from Latin nūllus →