Where does “septmāginta” come from?

septmāginta (Latin) comes from Proto-Indo-European septm̥̄ḱomt, from Proto-Indo-European septḿ̥-dḱomt — seven-ten.

Ancestry of “septmāginta”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	septm̥̄ḱomt	—
2	Proto-Indo-European	septḿ̥-dḱomt	seven-ten

septmāginta — Etymology, Origin & Word History | Etymology Explorer