Meaning & use
fiducial
Serving as a fixed standard or point of reference against which other measurements are taken.
See it in a sentence
Engineers placed fiducial markers on the object to calibrate the camera system.
The satellite uses a fiducial star to check that its instruments are properly aligned.
A note on using this word
A technical term used mainly in science, engineering, and statistics; not to be confused with "fiduciary," which relates to financial trust.
Words with a similar meaning
reference
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