Where does “оператор” come from?

оператор (Kazakh) comes from Russian опера́тор, from Latin operatōr, from Latin operor, from Latin opera, from Latin Opus, from Ancient Greek Ὀποῦς, from Ancient Greek ὀπός, from Proto-Indo-European sokʷós — to follow; to see; to say.

оператор (Kazakh): operator

Definitions

operator

Ancestry of “оператор”, step by step

Step	Language	Word	Meaning
1	Russian	опера́тор	operator, operative
2	Latin	operatōr	worker, operator
3	Latin	operor	I work, labor
4	Latin	opera	work, exertion, effort; service; care, attention...
5	Latin	Opus	The capital city of the Locri and birthplace of Patroclus
6	Ancient Greek	Ὀποῦς	Opus, Greece
7	Ancient Greek	ὀπός	juice, vegetable/plant juice; fig-juice
8	Proto-Indo-European	sokʷós	juice of plants
9	Proto-Indo-European	sekʷ-	to follow; to see; to say

Every word from Proto-Indo-European sekʷ- →Every word from Proto-Indo-European sokʷós →Every word from Ancient Greek ὀπός →