[ dip-loid ]
/ ˈdɪp lɔɪd /


double; twofold.
Biology. having two similar complements of chromosomes.


Biology. an organism or cell having double the basic haploid number of chromosomes.
Crystallography. a solid belonging to the isometric system and having 24 trapezoidal planes.

Origin of diploid

First recorded in 1905–10; dipl(o)- + -oid


dip·loi·dic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for diploid

British Dictionary definitions for diploid

/ (ˈdɪplɔɪd) /


biology (of cells or organisms) having pairs of homologous chromosomes so that twice the haploid number is present
double or twofold


biology a diploid cell or organism

Derived forms of diploid

diploidic, adjectivediploidy, 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

Medical definitions for diploid

[ dĭploid′ ]


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.


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.

Scientific definitions for diploid

[ dĭploid′ ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.