Where does “septitankki” come from?

septitankki (Finnish) comes from Finnish tankki, from Swedish tank, from Swedish tänka, from Old Swedish þænkia, from Old Norse þenkja, from Low German denken, from Middle Low German denken, from Old Saxon thenkian — to think.

septitankki (Finnish): septic tank

Definitions

  1. septic tank

Ancestry of “septitankki”, step by step

septitankki traces back through two separate lines of ancestry.

via Finnish tankki

StepLanguageWordMeaning
1Finnishtankkitank
2Swedishtanktank (container for liquids)
3Swedishtänkathink; to ponder, to communicate to oneself in...
4Old Swedishþænkiato perceive
5Old Norseþenkja
6Low Germandenkento think
7Middle Low Germandenkento think, to perceive
8Old Saxonthenkianto think; to perceive
9Proto-West Germanicþankijanto think
10Proto-Germanicþankijanąto perceive, to think
11Proto-Indo-Europeanteng-to think

via Finnish septinen

StepLanguageWordMeaning
1Finnishseptinenseptic
2Ancient Greekσηπτικόςputrefactive, septic
3Ancient Greekσηπτός
4Ancient GreekσήπωI make rotten or putrid; I rot, moulder
5Ancient Greekσήψputrefying sore; a kind of lizard, also a kind of...
Every word from Proto-Indo-European teng-Every word from Proto-Germanic þankijanąEvery word from Proto-West Germanic þankijan