fiducial - Wiktionary, the free dictionary
English
Adjective
fiducial (comparative more fiducial, superlative most fiducial)
- Accepted as a fixed basis of reference.
- ✤ Rulers and coins make good fiducial markers in photographs.
- Based on having trust.
Noun
fiducial (plural fiducials)
- In photography, a familiar reference object used to show size or scale, such as a ruler or a coin; a fiducial marker.
- In manufacturing, a small mark on a circuit board used to align components; a fiducial point.
- ✤ Coordinate term: registration mark (in printing)
Etymology
From Late Latin fīdūciālis, from fīdūcia (“trust, reliance”) + -ālis, from fīdō (“to trust”).
Pronunciation
- (UK) IPA: /f(a)ɪˈdjuːʃ(ɪ)əl/, /-ˈdʒuː-/, /-uːs(ɪ)əl/
- (US) IPA: /fəˈd(j)uːʃəl/
Printed 2026-07-13.
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