definition of
deletion

[1] #1 deletion n. [omission] any process whereby sounds or words are left out of spoken words or phrases. wn

[2] #2 deletion n. (genetics) the loss or absence of one or more nucleotides from a chromosome. wn

[3] #3 deletion n. [excision, cut] the omission that is made when an editorial change shortens a written passage; "an editor's deletions frequently upset young authors"; "both parties agreed on the excision of the proposed clause". wn

[4] #4 deletion n. the act of deleting something written or printed. wn