Also found in: Thesaurus, Acronyms, Wikipedia.


 (fĭ-do͞o′shəl, -dyo͞o′-, fī-)
1. Based on or relating to faith or trust.
2. Relating to or characteristic of a legal trust; fiduciary.
3. Regarded or employed as a standard of reference, as in surveying.

[Late Latin fīdūciālis, from Latin fīdūcia, trust, from fīdere, to trust; see bheidh- in Indo-European roots.]

fi·du′cial·ly adv.


1. (General Physics) physics used as a standard of reference or measurement: a fiducial point.
2. of or based on trust or faith
3. (Law) law a less common word for fiduciary
[C17: from Late Latin fīdūciālis , from Latin fīdūcia confidence, reliance, from fīdere to trust]
fiˈducially adv


(fɪˈdu ʃəl, -ˈdyu-)

1. accepted as a fixed basis of reference or comparison: a fiducial point.
2. based on or having trust: fiducial dependence upon God.
[1565–75; < Late Latin fīdūciālis= Latin fīdūci(a) trust (akin to fīdere to trust) + -ālis -al1]
fi•du′cial•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.fiducial - 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"
2.fiducial - used as a fixed standard of reference for comparison or measurement; "a fiducial point"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
3.fiducial - based on trust
trustworthy, trusty - worthy of trust or belief; "a trustworthy report"; "an experienced and trustworthy traveling companion"
References in periodicals archive ?
Farzad et al [4] focused the detection the specific fiducial points of the Seismocardiogram (SCG) signal with or without using the Electrocardiogram (ECG) R-wave as the reference point.
A fiducial is essentially an alignment mark used by surface-mount assembly machines.
For g > 1 the fiducial limits run from -[infinity] to +[infinity] (Finney 1971) and cannot be estimated.
Under image guidance, fiducial markers can be placed into the prostate gland to track the prostate during treatment and then to correct for motion.
The CyberKnife radiosurgery system is a recent, frameless stereotactic system, which allows real-time tracking of tumors during the entire treatment cycle using bony structures (for the skull and upper cervical spine) or implanted fiducial markers (for extracranial sites) as landmarks.
Fiducial is a provider of multi-disciplinary services to individuals and small businesses with a worldwide presence through its European and American subsidiaries.
In addition to three fiducial capture, we relied on experience with semiconductor printing and the technique used for wafer bumping.
Initially, conscious sedation with intravenous midazolam and fentanyl was administered to all patients prior to fiducial implantation.
Nicolas Sarkozy est largement en tete (40%) des intentions de vote chez les exploitants agricoles, devant Marine le Pen (17%) et Francois Bayrou (16%), selon un sondage Ifop Fiducial sur le vote des agriculteurs a paraEtre dans le Journal du dimanche.
com)-- Newmatic Medical introduces three specifications of gold fiducial markers to meet the quality and budget requirements of any imaging facility.
Two fluoroscopy images of a unique fiducial array automatically synchronize the mounting system with the surgical blueprint.
Four fiducial points, labeled A, B, C and D, at predetermined distances were indexed in four radio- graphs which were randomly selected.