väitöstutkimus (Finnish) comes from Finnish väitös, from Finnish väittää, from Finnish väki, from Icelandic vaki, from Arabic وَاقِع, from Arabic النَّسْر الوَاقِع — falling eagle.
väitöstutkimus (Finnish): doctoral study, a study that serves as a doctoral dissertation or doctoral thesis
Definitions
doctoral study, a study that serves as a doctoral dissertation or doctoral thesis
Ancestry of “väitöstutkimus”, step by step
väitöstutkimus traces back through two separate lines of ancestry.