| 1. | a deviation from accuracy or correctness; a mistake, as in action or speech: His speech contained several factual errors. |
| 2. | belief in something untrue; the holding of mistaken opinions. |
| 3. | the condition of believing what is not true: in error about the date. |
| 4. | a moral offense; wrongdoing; sin. |
| 5. | Baseball. a misplay that enables a base runner to reach base safely or advance a base, or a batter to have a turn at bat prolonged, as the dropping of a ball batted in the air, the fumbling of a batted or thrown ball, or the throwing of a wild ball, but not including a passed ball or wild pitch. |
| 6. | Mathematics. the difference between the observed or approximately determined value and the true value of a quantity. |
| 7. | Law.
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| 8. | Philately. a stamp distinguished by an error or errors in design, engraving, selection of inks, or setting up of the printing apparatus. Compare freak 1 (def. 5), variety (def. 8). |
error er·ror (ěr'ər)
n.
A defect or insufficiency in structure or function.
An act, an assertion, or a decision, especially one made in testing a hypothesis, that unintentionally deviates from what is correct, right, or true.