Where does “tertiary butyl” come from?

tertiary butyl (English) comes from English butyl, from English -yl, from French méthylène, from Ancient Greek μέθυ, from Proto-Hellenic métʰu, from Proto-Indo-European médʰu — honey; honey wine, mead.

tertiary butyl (English): The univalent organic radical C-

Definitions

The univalent organic radical C-

Ancestry of “tertiary butyl”, step by step

tertiary butyl traces back through two separate lines of ancestry.

via English butyl

Step	Language	Word	Meaning
1	English	butyl	Any of four isomeric univalent hydrocarbon...
2	English	-yl	A univalent radical or functional group formed...
3	French	méthylène	methylene
4	Ancient Greek	μέθυ	wine
5	Proto-Hellenic	métʰu	intoxicating drink; mead
6	Proto-Indo-European	médʰu	honey; honey wine, mead

via English Tertiary

Step	Language	Word	Meaning
1	English	Tertiary	Of or pertaining to the first part of the...
2	Latin	tertiārius	containing a third part
3	Latin	tertius	third, the ordinal number after secundus and...
4	Latin	trēs	three; 3
5	Proto-Italic	trēs	three
6	Proto-Indo-European	*tréyes	—

Words derived from “tertiary butyl”

tertiary butylhydroquinone

Every word from Proto-Indo-European médʰu →Every word from English -yl →Every word from Proto-Hellenic métʰu →