Meaning & use

fiducial

adjective·Advanced

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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