fiducial

/fɪˈduːʃəl/
adjective
  1. Used as a standard of reference or comparison, especially in science or measurement.
    • The surveyor placed a fiducial marker on the hill to help with mapping.
    • In the experiment, the laser beam was aligned with a fiducial point on the wall.
    • The telescope uses a fiducial line in the eyepiece to measure star positions.
  2. Based on trust or faith, especially in a legal or financial context.
    • The contract was fiducial, relying on the honesty of both parties.
    • Their relationship was fiducial, built on mutual confidence rather than written rules.
    • The court recognized the fiducial nature of the agreement between the partners.
What does "fiducial" mean? | whatsthatwordmean | whatsthatwordmean