Where does “opianique” come from?

opianique (French) comes from French opiane, from French -ane, from Middle French -ané, from Latin -āneus, from Latin -eus, from Proto-Italic *-eos — Forms adjectives indicating being formed out of a material.

opianique (French): opianic

Definitions

opianic

Ancestry of “opianique”, step by step

Step	Language	Word	Meaning
1	French	opiane	Synonym of narcotine
2	French	-ane	ane
3	Middle French	-ané	aneous
4	Latin	-āneus	forming adjectives Of or pertaining to; -aneous
5	Latin	-eus	argentum + API → argenteus; ferrum + API →...
6	Proto-Italic	*-eos	Forms adjectives indicating being formed out of a material

Every word from Proto-Italic *-eos →Every word from Latin -eus →Every word from Latin -āneus →