Where does “fiducial” come from?

Fiducial comes from Latin fiducia, meaning trust or confidence, derived from Latin fido, to trust, which traces to Proto-Indo-European bʰidʰ- and bʰeydʰ-, roots meaning to trust or persuade.

fiducial (English): Accepted as a fixed basis of reference; Based on...

Definitions

Accepted as a fixed basis of reference; Based on...

Ancestry of “fiducial”, step by step

Step	Language	Word	Meaning
1	Latin	fiducialis	—
2	Latin	fīdūcia	trust, confidence, assurance, reliance
3	Latin	fīdō	to trust, put confidence in
4	Proto-Italic	feiðō	to trust
5	Proto-Indo-European	bʰéydʰeti	to trust
6	Proto-Indo-European	bʰeydʰ-	to compel, force; to trust

Words derived from “fiducial”

fiducially
fiducialization

Every word from Proto-Indo-European bʰeydʰ- →Every word from Proto-Indo-European bʰéydʰeti →Every word from Proto-Italic feiðō →