a cell, cell product, or organism that is genetically identical to the unit or individual from which it was derived.
a population of identical units, cells, or individuals that derive from the same ancestral line.
a person or thing that duplicates, imitates, or closely resembles another in appearance, function, performance, or style: All the fashion models seemed to be clones of one another.
verb (used with object), cloned, cloning.
to produce a copy or imitation of.
to cause to grow as a clone.
to separate (a batch of cells or cell products) so that each portion produces only its own kind.
verb (used without object), cloned, cloning.
Biology. to grow as a clone.

1900–05; < Greek klṓn a slip, twig

clonal, adjective
clonally, adverb
cloner, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
clone (kləʊn)
1.  a group of organisms or cells of the same genetic constitution that are descended from a common ancestor by asexual reproduction, as by cuttings, grafting, etc, in plants
2.  Also called: gene clone a segment of DNA that has been isolated and replicated by laboratory manipulation: used to analyse genes and manufacture their products (proteins)
3.  informal a person or thing bearing a very close resemblance to another person or thing
4.  slang
 a.  a mobile phone that has been given the electronic identity of an existing mobile phone, so that calls made on the second phone are charged to the owner of the first phone
 b.  any similar object or device, such as a credit card, that has been given the electronic identity of another device usually in order to commit theft
5.  to produce or cause to produce a clone
6.  informal to produce near copies (of a person or thing)
7.  slang (tr) to give (a mobile phone, etc) the electronic identity of an existing mobile phone (or other device), so that calls, purchases, etc made with the second device are charged to the owner of the first device
[C20: from Greek klōn twig, shoot; related to klan to break]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1903, in botany, from Gk. klon "a twig." The verb is first recorded 1959. Extension to genetic duplication of human beings is from 1970.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

clone (klōn)

  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.

v. cloned, clon·ing, clones
  1. To make multiple identical copies of a DNA sequence.

  2. To establish and maintain pure lineages of a cell under laboratory conditions.

  3. To reproduce or propagate asexually.

clon'al (klō'nəl) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
clone   (klōn)  Pronunciation Key 
  1. A cell, group of cells, or organism that is produced asexually from and is genetically identical to a single ancestor. The cells of an individual plant or animal, except for gametes and some cells of the immune system, are clones because they all descend from a single fertilized cell and are genetically identical. A clone may be produced by fission, in the case of single-celled organisms, by budding, as in the hydra, or in the laboratory by putting the nucleus of a diploid cell into an egg that has had its nucleus removed. Some plants can produce clones from horizontal stems, such as runners. Clones of other cells and some plants and animals can also be produced in a laboratory. See also therapeutic cloning.

  2. A copy of a sequence of DNA, as from a gene, that is produced by genetic engineering. The clone is then transplanted into the nucleus of a cell from which genetic material has been removed.

  1. To produce or grow a cell, group of cells, or organism from a single original cell.

  2. To make identical copies of a DNA sequence. See more at genetic engineering.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

clone definition

A living system that is genetically identical to its ancestor (that is, it has exactly the same DNA molecules). Because each cell contains the DNA molecules that characterize an individual, it is, in principle, possible to replicate, or reproduce, complex living systems in the laboratory.

Note: The first cloned mammal, a sheep named Dolly, was born in Scotland in 1996. DNA from an adult donor was placed into an egg, which was then implanted in the uterus of another sheep. Since that time, mice, cows, and pigs have been cloned.
Note: There is a major debate on the ethical aspects (see bioethics) of cloning, especially as applied to human beings. Therapeutic cloning involves the placing of adult DNA in an egg for the express purpose of creating stem cells for medical purposes. Reproductive cloning involves the placement of adult DNA into an egg and the implantation of the egg into a uterus for the purpose of creating a viable fetus.
Note: Clone is often used informally to indicate a close copy or resemblance: “This new computer is a clone of the IBM model.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Computing Dictionary

clone definition

1. An exact copy of a product, made legally or illegally, from documentation or by reverse engineering, and usually cheaper.
E.g. "PC clone": a PC-BUS/ISA, EISA, VESA, or PCI compatible x86-based microcomputer (this use is sometimes misspelled "klone" or "PClone"). These invariably have much more bang per buck than the IB PCM they resemble.
E.g. "Unix clone": An operating system designed to deliver a Unix-like environment without Unix licence fees or with additional "mission-critical" features such as support for real-time programming.
2. A clonebot.
[Jargon File]
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
Therefore you must demonstrate that the deviations will still make a close enough copy to be a mind clone.
They could take cells from selected embryos and clone them, making multiple
  copies of a single creature.
The announcement last week that the first human clone had been born was met
  with skepticism, concern and outrage.
Red shows confidence and you won't disappear into the clone sea.
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