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Related to polyploid: autopolyploid, autopolyploidy


Having one or more extra sets of chromosomes: a polyploid species; a polyploid cell.
An organism with more than two sets of chromosomes.

pol′y·ploi′dy n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) (of cells, organisms, etc) having more than twice the basic (haploid) number of chromosomes
(Biology) an individual or cell of this type
ˌpolyˈploidal, ˌpolyˈploidic adj
ˈpolyˌploidy n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɒl iˌplɔɪd)
1. having a chromosome number that is more than double the basic or haploid number.
2. a polyploid cell or organism.
pol`y•ploi′dic, adj.
pol′y•ploi`dy, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polyploid - (genetics) an organism or cell having more than twice the haploid number of chromosomes
organism, being - a living thing that has (or can develop) the ability to act or function independently
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
Adj.1.polyploid - of a cell or organism having more than twice the haploid number of chromosomes; "a polyploid cell"; "a polyploid species"
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
diploid - of a cell or organism having two sets of chromosomes or twice the haploid number; "diploid somatic cells"
haploid, haploidic, monoploid - of a cell or organism having a single set of chromosomes
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
A double-contrast esophagogram in PMME usually reveals a smooth-surface tumor that is lobulated, polyploid, protruding, or sectionalized and has a tendency of growing in the radial or horizontal directions.
It proved that the invasion of polyploid populations (which are common for asexual organisms like hermaphrodites and parthenogens) occurred as a result of the Quaternary Glaciations.
As sorghum is an annual crop, breeding for higher yielding sweet varieties occurs at a much faster pace than does sugarcane, which contains a highly complex polyploid genome and is a perennial that is often grown in four to five year cycles, gready slowing the breeding process.
Serpentine ecotypic differentiation in a polyploid plant complex: shared tolerance to Mg and Ni stress among di- and tetraploid serpentine populations of Knautia arvensis (Dipsacaceae).
Wendel, "Copia-like retrotransposable element evolution in diploid and polyploid cotton (Gossypium L.)," Journal of Molecular Evolution, vol.
This year's review of genetics contains 23 studies of such aspects as witnessing genome evolution: experimental reconstruction of endosymbiotic and horizontal gene transfer, transcriptional regulation in Archaea: from individual genes to global regulatory networks, genetic and structural analysis of RRNPP intercellular peptide signaling of Gram-positive bacteria, combining traditional mutagenesis with new high-throughput sequencing and genome editing to reveal hidden variation in polyploid wheat, and the generation and evolution of neural cell types and circuits: insights from the Drosophila visual system.
Polyploid organisms should not be mistaken with organisms genetically modified by transgenics because the former only have more chromosomes than the most common number found in nature (Piferrer et al.
They were then further distinguished as being diploid (2n) so that (2n = 2[lambda]x = 8, where x = 1 and [lambda] = 4); the homeostatic standard genomic complement for most organisms, or as being polyploid; a numerical multiple [mathematical expression not reproducible] of that diploid complement, thus being some putative metastatic genomic complement (i.e.
Genome duplication has occurred numerous times in the species, and a recent study suggests 46 independent origins of tetraploid Galax, more than for any other polyploid (Servick et al., 2015).
Characterisation of microsatellite markers from sugarcane (Saccharum spp.), a highly polyploid species.