noun

• (computing) The destruction of data by manipulation of parts of it, either by deliberate or accidental human action or by imperfections in storage or transmission media.
  "The idea of having a time lag is to allow for situations when a corruption of some type affects the source server. If a corruption occurs, you do not want it to replicate to the copy of the database, so the time lag gives administrators the opportunity to recognize that a problem exists and then to have the ability to switch from the database copy if the corruption is so bad that it renders the original database unusable."
• (metalanguage) A nonstandard form of a word, expression, or text, especially when resulting from misunderstanding, transcription error, or mishearing. (See a usage note about this sense.)
  "The affix ty, like té, Fr., ta, It., dad, Sp., is a corruption of the Latin affix tas, tat, and Greek tes; as bounty, bonté, Fr., bonta, It., bondad, Sp., bonitas from bonus, good; vanity, vanité, Fr., vanita, It., vanidad, Sp, vanitas from vanus, vain."