Where does “зазвать” come from?

зазвать (Russian) comes from Russian зва́ть, from Old East Slavic зъвати, from Proto-Slavic zъvati, from Proto-Indo-European ǵʰewH- — to call on, invoke.

зазвать (Russian): to invite (persistently), to call in

Definitions

to invite (persistently), to call in

Ancestry of “зазвать”, step by step

Step	Language	Word	Meaning
1	Russian	зва́ть	to call
2	Old East Slavic	зъвати	—
3	Proto-Slavic	zъvati	to call
4	Proto-Indo-European	ǵʰewH-	to call on, invoke

Every word from Proto-Indo-European ǵʰewH- →Every word from Proto-Slavic zъvati →Every word from Old East Slavic зъвати →