Where does “число” come from?

число (Ukrainian) comes from Proto-Slavic čislo, from Proto-Slavic čisti, from Proto-Balto-Slavic (s)keistéi, from Proto-Indo-European *(s)kʷéyt-t ~ *(s)kit-ént, from Proto-Indo-European kʷeyt- — to notice; to read.

число (Ukrainian): number

Definitions

number

Ancestry of “число”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	čislo	number
2	Proto-Slavic	čisti	to read; to honour
3	Proto-Balto-Slavic	(s)keistéi	—
4	Proto-Indo-European	(s)kʷéyt-t ~ (s)kit-ént	—
5	Proto-Indo-European	kʷeyt-	to notice; to read

Every word from Proto-Indo-European kʷeyt- →

число — Etymology, Origin & Word History | Etymology Explorer