Where does “tetraboric acid” come from?

tetraboric acid (English) comes from English tetra, from Translingual Tetragonopterus, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

tetraboric acid (English): pyroboric acid

Definitions

  1. pyroboric acid

Ancestry of “tetraboric acid”, step by step

tetraboric acid traces back through two separate lines of ancestry.

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

via English boric

StepLanguageWordMeaning
1EnglishboricOf, pertaining to, or containing the element...
Every word from Proto-Indo-European peth₂-Every word from Proto-Indo-European péth₂r̥Every word from Ancient Greek πτερόν