(n): a process involved in human language
(n): (genetics) the loss or absence of one or more nucleotides from a chromosome
(n): (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism
(n): the omission that is made when an editorial change shortens a written passage
(n): putting something (as a literary work or a legislative bill) into acceptable form
(n): the act of deleting something written or printed
(n): the act of removing