Where does “issias” come from?

issias (Finnish) comes from German Ischias, from Ancient Greek ἰσχιάς, from Ancient Greek -ᾰ́ς, from Proto-Indo-European -ónts, from Hungarian önt, from Hungarian ön, from Hungarian ön-, from Turkish ön — sound, voice.

Ancestry of “issias”, step by step

StepLanguageWordMeaning
1GermanIschiassciatica; sciatic nerve
2Ancient Greekἰσχιάςhip-disease; sciatica; hip disease
3Ancient Greek-ᾰ́ςgroup of
4Proto-Indo-European-óntsDerives nouns denoting body parts
5Hungarianöntto pour; to cast; accusative singular of ön
6Hungarianönyou
7Hungarianön-self-
8Turkishönfront
9Ottoman Turkishاوكvoice (of human or animal); sound
10Proto-Turkicǖnsound, voice
Every word from Proto-Turkic ǖn →Every word from Ancient Greek -ᾰ́ς →Every word from Hungarian ön- →