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

Many data removal services can request deletions from a wide range of websites, including some that are not easy to find on your own. —Kurt Knutsson, FOXNews.com, 11 Apr. 2026

The deletion altered the production of a protein, which would become known as CFTR, a shorthand for cystic fibrosis transmembrane conductance regulator. —Courtney Crowder, USA Today, 10 Apr. 2026

James Hauser, who has a rare genetic condition called 1p36 deletion syndrome, faces daily challenges with physical and developmental delays. —Lauren Crawford, CBS News, 2 Apr. 2026

Deloitte research documents a parallel surge in app deletions and screentime limits among Gen Z themselves. —Luba Kassova, Fortune, 1 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