Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Double or twofold.
  • adjective Genetics Having a pair of each type of chromosome, so that the basic chromosome number is doubled.
  • noun A cell, organism, or group of organisms having a diploid number of chromosomes.

from The Century Dictionary.

  • noun In crystallography, a solid belonging to the isometric system, with 24 trapezoidal planes. It is the parallel-hemihedral form of the hexoctahedron. Also called dyakis-dodecahedron.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Crystallog.) A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron.
  • noun (Biol.) a cell or organism having a number of chromosomes corresponding to two copies of each chromosome; a diploid cell or organism.
  • adjective (Biol.) having a number of chromosomes corresponding to two copies of each chromosome; having double the basic number of chromosomes, as seen in a haploid cell. Contrasted to haploid and polyploid.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective cytology Of a cell, having a pair of each type of chromosome, one of the pair being derived from the ovum and the other from the spermatozoon. Most somatic cells of higher organisms are diploid.
  • noun A cell which is diploid.
  • noun An organism with diploid cells.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective of a cell or organism having two sets of chromosomes or twice the haploid number
  • noun (genetics) an organism or cell having the normal amount of DNA per cell; i.e., two sets of chromosomes or twice the haploid number

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek diploos, double; see dwo- in Indo-European roots + –oid.]

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Examples

  • The term diploid describes a state in which a cell has two sets of homologous chromosomes, or two chromosomes that are the same.

    CreationWiki - Recent changes [en] Ashcraft 2010

  • The term diploid describes a state in which a cell has two sets of homologous chromosomes, or two chromosomes that are the same.

    CreationWiki - Recent changes [en] Ashcraft 2010

  • The term diploid describes a state in which a cell has two sets of homologous chromosomes, or two chromosomes that are the same.

    CreationWiki - Recent changes [en] Ashcraft 2010

  • Crucially, the finished sequence must cover at least 98 percent of all twenty-three pairs of chromosomes that is, the diploid genome at a stringent accuracy of 99.999 percent or just 1 error per 100,000 bases.

    The $1,000 Genome Kevin Davies 2010

  • PE-2 yeast are what is known as diploid, having two copies each of 16 different chromosomes.

    PhysOrg.com - latest science and technology news stories 2009

  • First he released a new "diploid" map of his own genome, looking at contributions from both parents instead of just one.

    Genome Guru Wants to Map 10,000 Human Genomes in 10 Years 2007

  • Most diploid, meaning that the cells of adults contain two copies of the genetic material.

    Conservapedia - Recent changes [en] TK 2010

  • Most higher animals and plants (including humans) have two copies of their genetic code in most of their cells through most of their life cycle (they are "diploid"), but polyploid organisms have a extra copies, usually in multiples of two so the material can be evenly divided during sexual reproduction.

    Newswise: Latest News 2010

  • Most diploid, meaning that the cells of adults contain two copies of the genetic material.

    Conservapedia - Recent changes [en] 2010

  • These primordial germ cells are diploid, meaning that they have all the normal chromosomes of the organism in pairs.

    CreationWiki - Recent changes [en] Ashcraft 2010

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