deletion

noun

de·​le·​tion di-ˈlē-shən 

dē-

1

: the act of deleting

2

a

: something deleted

b(1)

: the absence of a section of genetic material from a gene or chromosome

(2)

: the mutational process that results in a deletion

Synonyms of deletion

• omission

Examples of deletion in a Sentence

one of the deletions from the final cut of the movie turned out to be my one line of dialogue

Recent Examples on the Web

At one end are stronger retention policies, deletion discipline, encryption, segmentation and tighter vendor oversight. —Mark Boxer, Forbes.com, 20 May 2026

Jorie’s example has already begun to have an effect, even for children considerably older than her for whom development was stymied by similar genetic deletions. —Casey Ross, STAT, 19 May 2026

In other words, the Redmond giant’s researchers had every incentive to find something positive about AI in the workplace, but instead found that blindly trusting LLMs to handle internal documents will almost certainly result in everything from errors to data deletion. —Krystle Vermes, Futurism, 14 May 2026

The district received confirmation that the data was deleted in October of 2025, and yet the report was never deleted as part of that deletion activity. —Karen Morfitt, CBS News, 14 May 2026

Word History

Etymology

Latin deletion-, deletio destruction, from delēre

First Known Use

1590, in the meaning defined at sense 1

Rhymes for deletion

• accretion
• completion
• concretion
• depletion
• excretion
• repletion
• secretion
• carburetion
• grecian
• hypersecretion

Medical Definition

deletion

noun

de·​le·​tion di-ˈlē-shən 

1

: the absence of a section of genetic material from a gene or chromosome

2

: the mutational process that results in a deletion