follow Dictionary.com

Capitol vs. capital? What's the difference?

diploid

[dip-loid] /ˈdɪp lɔɪd/
adjective
1.
double; twofold.
2.
Biology. having two similar complements of chromosomes.
noun
3.
Biology. an organism or cell having double the basic haploid number of chromosomes.
4.
Crystallography. a solid belonging to the isometric system and having 24 trapezoidal planes.
Origin of diploid
1905-1910
1905-10; dipl(o)- + -oid
Related forms
diploidic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for diploid
Historical Examples
  • In animals, as in plants, the diploid generation attained the higher development and gradually assumed the dominant position.

    Darwin and Modern Science A.C. Seward and Others
  • Similarly all the higher animals appear to us as independent organisms with diploid nuclei only.

    Darwin and Modern Science A.C. Seward and Others
  • The uninitiated sees in the more highly organised plants only a succession of diploid generations.

    Darwin and Modern Science A.C. Seward and Others
  • They appear with this arrangement in all subsequent nuclear divisions in the diploid generation.

    Darwin and Modern Science A.C. Seward and Others
  • Technically the tissue-cells are said to contain the diploid number of chromosomes, the gametes the reduced or haploid number.

    Being Well-Born Michael F. Guyer
  • diploid (2n) chromosome numbers were determined from cells in late prophase and metaphase of mitosis.

British Dictionary definitions for diploid

diploid

/ˈdɪplɔɪd/
adjective
1.
(biology) (of cells or organisms) having pairs of homologous chromosomes so that twice the haploid number is present
2.
double or twofold
noun
3.
(biology) a diploid cell or organism
Derived Forms
diploidic, adjective
diploidy, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for diploid
adj.

1908, from Greek diploos "double, twofold," (from di- "two" + root *pel- "to fold;" see ply (v.)) + eidos "form" (see -oid).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
diploid in Medicine

diploid dip·loid (dĭp'loid')
adj.
Having two sets of chromosomes or double the haploid number of chromosomes in the germ cell, with one member of each chromosome pair derived from the ovum and one from the spermatazoon. The diploid number, 46 in humans, is the normal chromosome complement of an organism's somatic cells. n.
A diploid organism or cell.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
diploid in Science
diploid
  (dĭp'loid')   
Having paired sets of chromosomes in a cell or cell nucleus. In diploid organisms that reproduce sexually, one set of chromosomes is inherited from each parent. The somatic cells of most animals are diploid. Compare haploid. See Note at mitosis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for diploid

Many English speakers likely know this word

Word Value for diploid

11
13
Scrabble Words With Friends

Nearby words for diploid