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

Enrico Cappellini, a senior author of the new study and a professor of paleoproteomics at the Globe Institute, University of Copenhagen, said the deletion of the entire gene had been observed in some living male humans and even in the DNA of a Neanderthal male. — Katie Hunt, CNN Money, 24 June 2026

While removal from the Dow did not necessarily cause Intel's rebound, still, the performance illustrates why index deletion does not always lead to further losses, especially for struggling stocks. — Deena Zaidi, CNBC, 24 June 2026

As for duplicates, by default, the app marks all but one of each duplicate set for deletion. — Neil J. Rubenking, PC Magazine, 24 June 2026

An index deletion may lead to selling by investors who have no view on value. — Jim Osman, Forbes.com, 19 June 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