Where does “チュノム” come from?

チュノム (Japanese) comes from Vietnamese chữ Nôm, from Vietnamese Nôm, from Old Portuguese non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

チュノム (Japanese): chữ Nôm

Definitions

chữ Nôm

Ancestry of “チュノム”, step by step

Step	Language	Word	Meaning
1	Vietnamese	chữ Nôm	a historical writing system based on Chinese...
2	Vietnamese	Nôm	written in Vietnamese using chữ Nôm
3	Old Portuguese	non	no, not
4	Latin	nōn	not
5	Old Latin	noenum	—
6	Proto-Indo-European	óynos	one; single

Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →