• synonyms


[dih-lee-shuh n]
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  1. an act or instance of deleting.
  2. the state of being deleted.
  3. a deleted word, passage, etc.
  4. Genetics. a type of chromosomal aberration in which a segment of the chromosome is removed or lost.
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Origin of deletion

1580–90; < Latin dēlētiōn- (stem of dēlētiō) a destroying, equivalent to dēlēt(us) (see delete) + -iōn- -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for deletion

cut, remotion, expunction, removal, cancellation

Examples from the Web for deletion

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Historical Examples of deletion

British Dictionary definitions for deletion


  1. the act of deleting or fact of being deleted
  2. a deleted passage, word, etc, in text
  3. the loss or absence of a section of a chromosome
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for deletion


1580s, from Latin deletionem (nominative deletio), noun of action from past participle stem of delere (see delete).

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Online Etymology Dictionary, © 2010 Douglas Harper

deletion in Medicine


  1. Loss, as from mutation, of one or more nucleotides from a chromosome.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.