Definition of: error

(er′ər) noun
1. The condition of erring, or going astray from the truth, especially in matters of opinion or belief; also, deviation from a right standard of judgment or conduct, as through ignorance or inadvertence; mistake.
2. Something done, said, or believed wrongly; a deviation from correctness or accuracy, or from truth.
3. Any misplay in baseball which prolongs the batsman's time at bat or permits a base runner to make one or more bases. Misplays, as a passed ball or a wild pitch, made by catcher or pitcher, are not scored as errors.
4. A violation or neglect of duty; transgression; sin.
5. Math, a The difference between the observed value of a magnitude and the true or mean value as determined by a series of measurements of the same quantity. b Any deviation from the true or mean value not due to gross blunders of observation and measurement.
6. In Christian Science, the contradiction of truth; a belief without understanding; that which seems and is not. [<OF <L <errare wander] Synonyms: balk, blunder, fallacy, falsity, fault, hallucination, mistake, omission, oversight, unsoundness. See DELUSION, FOIBLE.