noun \ˈer-ər, ˈe-rər\

: something that is not correct : a wrong action or statement

: a mistake made by a person who is playing a sport (such as baseball or tennis)

Full Definition of ERROR

a :  an act or condition of ignorant or imprudent deviation from a code of behavior
b :  an act involving an unintentional deviation from truth or accuracy <made an error in adding up the bill>
c :  an act that through ignorance, deficiency, or accident departs from or fails to achieve what should be done <an error in judgment>: as
(1) :  a defensive misplay other than a wild pitch or passed ball made by a baseball player when normal play would have resulted in an out or prevented an advance by a base runner (2) :  the failure of a player (as in tennis) to make a successful return of a ball during play
d :  a mistake in the proceedings of a court of record in matters of law or of fact
a :  the quality or state of erring <the map is in error>
b Christian Science :  illusion about the nature of reality that is the cause of human suffering :  the contradiction of truth
c :  an instance of false belief
:  something produced by mistake <a typographical error>; especially :  a postage stamp exhibiting a consistent flaw (as a wrong color) in its manufacture
a :  the difference between an observed or calculated value and a true value; specifically :  variation in measurements, calculations, or observations of a quantity due to mistakes or to uncontrollable factors
b :  the amount of deviation from a standard or specification
:  a deficiency or imperfection in structure or function <an error of metabolism>
er·ror·less \-ləs\ adjective

Examples of ERROR

  1. I made an error in my calculations.
  2. They uncovered several errors in his report to the committee.
  3. The paper contains numerous spelling errors.
  4. horrifying cases of hospital error
  5. The shortstop was charged with an error.

Origin of ERROR

Middle English errour, from Anglo-French, from Latin error, from errare
First Known Use: 13th century

Synonym Discussion of ERROR

error, mistake, blunder, slip, lapse mean a departure from what is true, right, or proper. error suggests the existence of a standard or guide and a straying from the right course through failure to make effective use of this <procedural errors>. mistake implies misconception or inadvertence and usually expresses less criticism than error <dialed the wrong number by mistake>. blunder regularly imputes stupidity or ignorance as a cause and connotes some degree of blame <diplomatic blunders>. slip stresses inadvertence or accident and applies especially to trivial but embarrassing mistakes <a slip of the tongue>. lapse stresses forgetfulness, weakness, or inattention as a cause <a lapse in judgment>.


noun \ˈer-ər\   (Medical Dictionary)

Medical Definition of ERROR

: a deficiency or imperfection in structure or function <inborn errors of metabolism>


noun    (Concise Encyclopedia)

In applied mathematics, the difference between a value and an estimate of that value. In statistics, a common example is the difference between the mean age of a given group of people (see mean, median, and mode) and that of a sample drawn from the group. In numerical analysis, an example of round-off error is the difference between the true value of pi and commonly substituted expressions like and shorter versions like 3.14159. Truncation error results from using only the first few terms of an infinite series. Relative error is the ratio of the size of an error to the size of the quantity measured, and percentage error is relative error expressed as a percent.


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