Where does “eicosa-” come from?

eicosa- (English) comes from Ancient Greek εἴκοσι, from Proto-Hellenic ewīkəti, from Proto-Indo-European wídḱm̥ti, from Proto-Indo-European dwidḱómt, from Proto-Indo-European déḱm̥t — ten.

eicosa- (English): Alternative form of icosa-

Definitions

Alternative form of icosa-

Ancestry of “eicosa-”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	εἴκοσι	twenty
2	Proto-Hellenic	ewīkəti	—
3	Proto-Indo-European	wídḱm̥ti	twenty
4	Proto-Indo-European	dwidḱómt	—
5	Proto-Indo-European	déḱm̥t	ten

Words derived from “eicosa-”

eicosadienoic
eicosadiene
eicosadienoyl

Every word from Proto-Indo-European déḱm̥t →

eicosa- — Etymology, Origin & Word History | Etymology Explorer