[fi-doo-shuh l, -dyoo-]
- accepted as a fixed basis of reference or comparison: a fiducial point; a fiducial temperature.
- based on or having trust: fiducial dependence upon God.
Origin of fiducial
1565–75; < Late Latin fīdūciālis, equivalent to fīdūci(a) trust (akin to fīdere to trust) + -ālis -al1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fiducial
These lines are our fiducial lines, and all colours can be referred to them.Colour Measurement and Mixture
W. de W. Abney
It gives, in short, the average tint of every unit of area in the picture, measured from the fiducial lines as co-ordinates.
It is upon this focusing-screen in the roof that I see the fiducial lines by which I make all the adjustments.
As regards the fiducial lines, they might be drawn on the glass screen; but black lines are not, I find, the best.
Fiducial, fi-dū′shi-al, adj. showing confidence or reliance: of the nature of a trust.
- physics used as a standard of reference or measurementa fiducial point
- of or based on trust or faith
- law a less common word for fiduciary
C17: from Late Latin fīdūciālis , from Latin fīdūcia confidence, reliance, from fīdere to trust
Word Origin and History for fiducial
1570s, from Latin fiducialis "reliable," from fiducia "trust" (see faith).
Online Etymology Dictionary, © 2010 Douglas Harper