Where does “exponens” come from?

exponens (Latin) comes from Latin expōnō, from Latin pōnō, from Proto-Italic poznō, from Proto-Italic pozinō, from Proto-Italic sinō.

Ancestry of “exponens”, step by step

Step	Language	Word	Meaning
1	Latin	expōnō	—
2	Latin	pōnō	—
3	Proto-Italic	poznō	—
4	Proto-Italic	pozinō	—
5	Proto-Italic	sinō	—

exponens — Etymology, Origin & Word History | Etymology Explorer