Where does “duodecade” come from?

duodecade (English) comes from English decade, from Middle English decade, from Middle French decade, from Latin decās, from Ancient Greek δεκάς, from Ancient Greek -ᾰ́ς, from Proto-Indo-European -ónts, from Hungarian önt — sound, voice.

duodecade (English): A period of twelve years

Definitions

A period of twelve years

Ancestry of “duodecade”, step by step

duodecade traces back through two separate lines of ancestry.

via English decade

Step	Language	Word	Meaning
1	English	decade	A group, set, or series of ten, particularly
2	Middle English	decade	—
3	Middle French	decade	a series of 10 books
4	Latin	decās	a decade (period of ten years)
5	Ancient Greek	δεκάς	the number ten; a group of ten, decade
6	Ancient Greek	-ᾰ́ς	group of
7	Proto-Indo-European	-ónts	Derives nouns denoting body parts
8	Hungarian	önt	to pour; to cast; accusative singular of ön
9	Hungarian	ön	you
10	Hungarian	ön-	self-
11	Turkish	ön	front
12	Ottoman Turkish	اوك	voice (of human or animal); sound
13	Proto-Turkic	ǖn	sound, voice

via Latin duodecas

Step	Language	Word	Meaning
1	Latin	duodecas	the number twelve
2	Ancient Greek	δυωδεκάς	—

Every word from Proto-Turkic ǖn →