Where does “рассосаться” come from?

рассосаться (Russian) comes from Russian соса́ть, from Old East Slavic съсати, from Proto-Slavic sъsàti, from Proto-Balto-Slavic suś-, from Proto-Indo-European sewk-, from Proto-Indo-European sewh₁- — to press, push.

рассосаться (Russian): to resolve, to dissolve

Definitions

to resolve, to dissolve

Ancestry of “рассосаться”, step by step

Step	Language	Word	Meaning
1	Russian	соса́ть	to suck
2	Old East Slavic	съсати	—
3	Proto-Slavic	sъsàti	to suck
4	Proto-Balto-Slavic	suś-	—
5	Proto-Indo-European	sewk-	to bend, turn; to suck
6	Proto-Indo-European	sewh₁-	to press, push

Every word from Proto-Indo-European sewh₁- →Every word from Proto-Indo-European sewk- →Every word from Proto-Balto-Slavic suś- →