Where does “pentadecanone” come from?

pentadecanone (English) comes from English pentadeca-, from English deca-, from French déca-, from Latin decās, from Ancient Greek δεκάς, from Ancient Greek -ᾰ́ς, from Proto-Indo-European -ónts, from Hungarian önt — sound, voice.

pentadecanone (English): Any of several isomeric aliphatic ketones having fifteen carbon atoms

Definitions

Any of several isomeric aliphatic ketones having fifteen carbon atoms

Ancestry of “pentadecanone”, step by step

Step	Language	Word	Meaning
1	English	pentadeca-	API; fifteen
2	English	deca-	Greek number...
3	French	déca-	deca-
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

Every word from Proto-Turkic ǖn →Every word from Ancient Greek -ᾰ́ς →Every word from English deca- →