This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Based on or relating to faith or trust.

adj. Relating to or characteristic of a legal trust; fiduciary.

adj. Regarded or employed as a standard of reference, as in surveying.

adj. Accepted as a fixed basis of reference.

adj. Based on having trust.

n. In manufacturing, a small mark on a circuit board used to align components, a fiducial point.

adj. Having faith or trust; confident; undoubting; firm.

adj. Having the nature of a trust; fiduciary.

Trusting; confident; undoubting; firm.

Same as fiduciary, 2.

In physics, having a fixed position or character, and hence used as a basis of reference or comparison.

Relating to or characterized by the belief in supernatural powers.

adj. relating to or of the nature of a legal trust (i.e. the holding of something in trust for another)

adj. based on trust

adj. used as a fixed standard of reference for comparison or measurement

"Yes. marker = printed icon or glyph, also known as a fiducial"

trusty    trustworthy    fiducial point   

fiducial points    fiducial edge   

confident    undoubting    firm    fiduciary   

final-approach    symbian-based    blood-colored    musicology    cellsurface    high tide    thirtytwo    bow-and-arrow    threeyear    felt-tip