fiducial

adjective

fi·​du·​cial fə-ˈdü-shəl 

-ˈdyü-,

fī-

1

: taken as standard of reference

a fiducial mark

2

: founded on faith or trust

3

: having the nature of a trust : fiduciary

fiducially

fə-ˈdü-shə-lē 

-ˈdyü-

fī-

adverb

Examples of fiducial in a Sentence

Recent Examples on the Web

Get a load of the black-and-white fiducial navigation stickers on the dock. —Ron Amadeo, Ars Technica, 23 May 2023

The platform’s position, orientation, and velocity are estimated by an extended Kalman filter using simulated GPS measurements when the quadrotor-platform distance is large, and by a visual fiducial system when the platform is nearby. —IEEE Spectrum, 13 Mar. 2020

Printed fiducial markers are inexpensive, easy to deploy, robust, and deservedly popular. —IEEE Spectrum, 2 Dec. 2022

But Facebook is claiming that its system will work more smoothly and consistently than other AR platforms, and that will be simple for people to turn their posters or images into fiducial markers. —Adi Robertson, The Verge, 5 Apr. 2018

A small camera on the headset was reading the fiducial markers on the (real) wall and using that spatial information to track his position among the (virtual) cubes. —Peter Rubin, WIRED, 20 May 2014

Word History

Etymology

borrowed from Medieval Latin fīdūciālis "confident, trusting, trustworthy," going back to Late Latin, "having trust in God or the Christian faith," from Latin fīdūcia "trust, reliance, confidence" + -ālis -al entry 1 — more at fiduciary entry 1

First Known Use

1571, in the meaning defined at sense 1