Where does “triamniotic” come from?

triamniotic (English) comes from English amniotic, from French amniotique, from Ancient Greek ἀμνίον, from Ancient Greek ἀμνός, from Proto-Indo-European h₂egʷnós, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

triamniotic (English): Having three amniotic sacs

Definitions

Having three amniotic sacs

Ancestry of “triamniotic”, step by step

triamniotic traces back through two separate lines of ancestry.

via English amniotic

Step	Language	Word	Meaning
1	English	amniotic	Pertaining to the amnion
2	French	amniotique	amniotic
3	Ancient Greek	ἀμνίον	bowl in which the blood of victims was caught;...
4	Ancient Greek	ἀμνός	lamb
5	Proto-Indo-European	h₂egʷnós	lamb
6	Proto-Indo-European	-nós	Creates verbal adjectives from roots

via English tri

Step	Language	Word	Meaning
1	English	tri	triathlon; triangle
2	Proto-Indo-European	tréyes	three

Every word from Proto-Indo-European -nós →Every word from Proto-Indo-European h₂egʷnós →Every word from Ancient Greek ἀμνός →