Where does “vaihtoautohalli” come from?

vaihtoautohalli (Finnish) comes from Finnish halli, from Swedish håll, from Swedish plats, from Old Swedish platz, from Old Norse plaz, from Middle Low German platse, from Latin platēa, from Ancient Greek πλατεῖα — flat.

Ancestry of “vaihtoautohalli”, step by step

vaihtoautohalli traces back through two separate lines of ancestry.

via Finnish halli

StepLanguageWordMeaning
1Finnishhallilarge building used for sports or exhibitions,...
2Swedishhålla stop, a station; a direction; a range, a...
3Swedishplatsplace; any geographical position a little larger...
4Old Swedishplatz
5Old Norseplaz
6Middle Low Germanplatse
7Latinplatēabroad way, street
8Ancient Greekπλατεῖαfeminine nominative singular of πλατύς; feminine...
9Ancient Greekπλατύςwide, broad; flat, level; broad-shouldered
10Proto-Indo-Europeanpléth₂usflat, broad
11Proto-Indo-Europeanpleth₂-flat

via Finnish vaihtoauto

StepLanguageWordMeaning
1Finnishvaihtoautoused car, traded car
2Finnishautocar, automobile
3Finnishautomobiiliautomobile, car
4Frenchautomobileautomotive; automobile
5Frenchauto-auto- regarding oneself
6Ancient Greekαὐτο-self-
7Ancient Greekαὐτόςαὐτή f, αὐτό n; "first/second declension";...
8Proto-Indo-Europeanh₂ewaway from, off; again
9Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact
Every word from Proto-Indo-European pleth₂-Every word from Proto-Indo-European pléth₂usEvery word from Ancient Greek πλατύς