Fiducial meaning

fĭ-do͝oshəl, -dyo͝o-, fī-
Based on firm faith.
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Based on or relating to faith or trust.
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Relating to or characteristic of a legal trust; fiduciary.
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Regarded or employed as a standard of reference, as in surveying.
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Used as a standard of reference for measurement or calculation.

A fiducial point.

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Accepted as a fixed basis of reference.
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Based on having trust.
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In manufacturing, a small mark on a circuit board used to align components, a fiducial point.
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Origin of fiducial

  • Late Latin fīdūciālis from Latin fīdūcia trust from fīdere to trust bheidh- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin fiducialis, from fiducia (“trust”), from fido (“to trust”)

    From Wiktionary