Where does “asiasisällys” come from?

asiasisällys (Finnish) comes from Finnish sisällys, from Finnish sisältää, from Finnish sisä-, from Proto-Finnic sicä, from Proto-Uralic śićä.

Ancestry of “asiasisällys”, step by step

asiasisällys traces back through two separate lines of ancestry.

via Finnish sisällys

StepLanguageWordMeaning
1Finnishsisällyscontent
2FinnishsisältääTo include; to contain; To involve
3Finnishsisä-inner, internal, interior, inward; indoor; inland
4Proto-Finnicsicäinsides, inside
5Proto-Uralicśićä—

via Finnish asia

StepLanguageWordMeaning
1Finnishasiaissue, matter, affair, concern, business,...
2Proto-Finnicacjamatter, case
Every word from Proto-Uralic śićä →Every word from Finnish sisä- →Every word from Finnish sisältää →