Where does “сплайсинг” come from?

сплайсинг (Kazakh) comes from Russian сплайсинг, from English splicing, from English splice, from Middle Dutch splissen.

сплайсинг (Kazakh): splicing

Definitions

Step	Language	Word	Meaning
1	Russian	сплайсинг	—
2	English	splicing	The act by which things are spliced; The point at...
3	English	splice	A junction or joining of ropes made by splicing...
4	Middle Dutch	splissen	—