Where does “unicidad” come from?

unicidad (Spanish) comes from Spanish único, from Latin ūnicus, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

unicidad (Spanish): uniqueness

Definitions

uniqueness

Ancestry of “unicidad”, step by step

Step	Language	Word	Meaning
1	Spanish	único	only; single; sole; unique, one-of-a-kind;...
2	Latin	ūnicus	only, sole, single
3	Latin	ūnus	one, single
4	Old Latin	oinos	one
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 Old Latin oinos →