1 : the absence of a section of genetic material from a gene or chromosome 2 : the mutational process that results in a deletion

deletion (to something) the act of removing something that has been written or printed, or that has been stored on a computer; something that has been removed. He made several deletions to the …

A deletion is also the loss of part of a chromosome (= structure containing the information that controls what plants and animals are like), or the chromosome that results from such a loss.

DELETION definition: an act or instance of deleting. See examples of deletion used in a sentence.

deletion, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

They allow users to manage their preferences and consent, access their personal data, and request data deletion.

4 days ago · A deletion, as related to genomics, is a type of mutation that involves the loss of one or more nucleotides from a segment of DNA. A deletion can involve the loss of any number of …

Define deletion. deletion synonyms, deletion pronunciation, deletion translation, English dictionary definition of deletion. n. 1. The act of deleting; removal by striking out. 2. Material, such as a word or …

In genetics, a deletion (also called gene deletion, deficiency, or deletion mutation) (sign: Δ) is a mutation (a genetic aberration) in which a part of a chromosome or a sequence of DNA is left out during DNA …

Nov 1, 2025 · deletion (countable and uncountable, plural deletions) The act of deleting. [c. 1600[1]] hyponym . The file contained errors that required deletion. (genetics) A mutation in which a gene, or …