Where does “sisältöinen” come from?

sisältöinen (Finnish) comes from Finnish sisältö, from Finnish sisältää, from Finnish sisä-, from Proto-Finnic sicä, from Proto-Uralic śićä.

Ancestry of “sisältöinen”, step by step

StepLanguageWordMeaning
1Finnishsisältöcontent, contents; content; meaning
2FinnishsisältääTo include; to contain; To involve
3Finnishsisä-inner, internal, interior, inward; indoor; inland
4Proto-Finnicsicäinsides, inside
5Proto-Uralicśićä—
Every word from Proto-Uralic śićä →Every word from Finnish sisä- →Every word from Finnish sisältää →