n. A cell, group of cells, or organism that is descended from and genetically identical to a single common ancestor, such as a bacterial colony whose members arose from a single original cell.n. An organism descended asexually from a single ancestor, such as a plant produced by layering or a polyp produced by budding.n. A DNA sequence, such as a gene, that is transferred from one organism to another and replicated by genetic engineering techniques.n. One that copies or closely resembles another, as in appearance or function: "filled with business-school clones in gray and blue suits” ( Michael M. Thomas). v. To make multiple identical copies of (a DNA sequence).v. To create or propagate (an organism) from a clone cell: clone a sheep. v. To reproduce or propagate asexually: clone a plant variety. v. To produce a copy of; imitate closely: "The look has been cloned into cliché” ( Cathleen McGuigan). verb-intransitive. To grow as a clone.