Where does “ultraradical” come from?

ultraradical (English) comes from English radical, from French radical, from Late Latin radicalis, from Latin rādīx, from Proto-Italic wrādīks, from Proto-Indo-European wréh₂ds — root.

ultraradical (English): A root of the polynomial "x + x + a", where "a"...

Definitions

A root of the polynomial "x + x + a", where "a"...

Ancestry of “ultraradical”, step by step

ultraradical traces back through two separate lines of ancestry.

via English radical

Step	Language	Word	Meaning
1	English	radical	Favoring fundamental change, or change at the...
2	French	radical	radical; radical, root
3	Late Latin	radicalis	of or pertaining to the root, having roots,...
4	Latin	rādīx	root of a plant
5	Proto-Italic	wrādīks	root
6	Proto-Indo-European	wréh₂ds	root

via English ultra

Step	Language	Word	Meaning
1	English	ultra	Extreme; far beyond the norm; fanatical;...
2	Latin	ultrā	beyond
3	Latin	-a	suffixed to the roots of verbs, forms agent...
4	Proto-Italic	-ā	Forms masculine agent nouns from prefixed or compounded bases
5	Proto-Indo-European	-éh₂	—

Every word from Proto-Indo-European wréh₂ds →Every word from Proto-Italic wrādīks →Every word from Latin rādīx →