Where does “sialogog” come from?

sialogog (English) comes from English agog, from Middle English agogge, from Old French en, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “sialogog”, step by step

Step	Language	Word	Meaning
1	English	agog	In eager desire, eager, astir; Wide open; In a...
2	Middle English	agogge	—
3	Old French	en	in; inside; on; upon; in
4	Latin	în	in, at, on, upon, from (space)
5	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
6	Proto-Italic	en	in
7	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →