(noun, adjective)


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

- a fiduciary contract

- in a fiduciary capacity

- fiducial power

Similar word(s): fiduciary

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

- a fiducial point

3. based on trust

Similar word(s): trustworthy, trusty


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