1. A group of genetically identical cells descended from a single common ancestor, such as a bacterial colony whose members arose from a single original cell as a result of binary fission.

2. An organism descended asexually from a single ancestor, such as a plant produced by layering or a polyp produced by budding.

3. A replica of a DNA sequence, such as a gene, produced by genetic engineering.

4. 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).

1. To make multiple identical copies of (a DNA sequence).

2. a. To establish and maintain pure lineages of (a cell) under laboratory conditions. b. To reproduce or propagate asexually: clone a frog; clone a plant variety.

3. To produce a copy of; imitate: "The look has been cloned into cliché" (Cathleen McGuigan).