Where does “tetrapolar” come from?

tetrapolar (English) comes from English polar, from Latin polāris, from Latin polus, from Ancient Greek πόλος, from Proto-Indo-European kʷel- — to turn.

tetrapolar (English): Having or relating to four poles

Definitions

  1. Having or relating to four poles

Ancestry of “tetrapolar”, step by step

tetrapolar traces back through two separate lines of ancestry.

via English polar

StepLanguageWordMeaning
1EnglishpolarOf or having a pole or polarity; Of, relating to,...
2Latinpolāris
3Latinpoluspole
4Ancient Greekπόλοςpivot, hinge, axis, pole; axis of the celestial...
5Proto-Indo-Europeankʷel-to turn

via English tetra

StepLanguageWordMeaning
1EnglishtetraAny of numerous species of small South American...
2TranslingualTetragonopterus
3Ancient Greekπτερόνfeather; wing; Any winged creature
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European kʷel-Every word from Ancient Greek πόλοςEvery word from Latin polus