Fiducial
Fiducial , adjective
[Latin fiducia trust, confidence; akin to fides faith. See Faith.]
1.
Having faith or trust; confident; undoubting; firm.
Fiducial reliance on the promises of God.
2.
Having the nature of a trust; fiduciary; as, fiducial power. — Spelman
Collocations (2)
Fiducial edge (Astronomy & Surveying) , the straight edge of the alidade or ruler along which a straight line is to be drawn.
Fiducial line or Fiducial point (Mathematics & Physics) , a line or point of reference, as for setting a graduated circle or scale used for measurements.