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

In addition to creating a registry for these brokers, and implementing new mandatory fees for the registry, the bill also charges the state Department of Consumer Protection with creating a deletion mechanism that would let people remove their personal data from broker databases and websites. —P.r. Lockhart, Hartford Courant, 24 Apr. 2026

News outlets tasked with dealing with commenters often delegate comment moderation—the oversight of reader comments, intervention, and, possibly, deletion of problematic content—to journalists themselves. —Encyclopedia Britannica, 22 Apr. 2026

Analysts warn the deletions could fuel fears of longer-term consequences. —ABC News, 22 Apr. 2026

Paternal Chromosome 15 Deletion The most common cause of PWS is a deletion of the region of chromosome 15 from the father's side. —Ruth Jessen Hickman, Health, 15 Apr. 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