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Having five haploid sets of chromosomes.
A pentaploid individual.
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.


(ˈpɛntəˌplɔɪd) biology
(Biology) containing five haploid sets of chromosomes
(Biology) a pentaploid organism
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɛn təˌplɔɪd)

1. having a chromosome number that is five times the haploid number.
2. a pentaploid cell or organism.
pen′ta•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.
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Cytological and breeding behavior of pentaploids derived from 3x*4x crosses in potato.
megalanthus and various Hylocereus genotypes yielded diploids, triploids, tetraploids, pentaploids, hexaploids and octaploids hybrids (Tel-Zur et al 2004; 2005; 2011a & b and Cisneros et al 2013).
Somatic chromosome counts determined for these 11 accessions indicated two triploid (A12256 and A12260), three pentaploids (A12348, A12352, and A12365), and six hexaploids (A12317, A12318, A12319, A12320, A12356, and A12358) (Table 1 and Fig.
Amended models for pentaploids. Heredity 68: 193-200.
napus after selfing the [A.sup.r][A.sup.n][B.sup.c][C.sup.c][C.sup.n] pentaploids. It also suggested that some chromosome fragments of Be genome might have been introgressed into the partial new-typed B.
Both Frio and PI 409704 are pentaploids with 45 chromosomes that associate essentially as 18 bivalents and 9 univalents during metaphase I of meiosis.
The B[C.sub.1] pentaploids of both families grown to reproductive maturity were large robust plants, but to have enough material to carry out our hybridization program, we had to graft 10 scions from the first two G.
One hundred sixty-eight plants were progeny from PI 409704 and their mean 2C DNA content was 4.15 pg which indicated they were pentaploids with 45 chromosomes.
(1998) used SSRs in research with [F.sub.1] pentaploids from a cross of Sumai 3 / DT486 (susceptible tetraploid) and tetraploid D chromosome addition lines.
NE84-411 progeny and NE84-401 progeny were a mixture of pentaploids and hexaploids (Table 3).
Pentaploids are generated from 2n + n matings following a 4x x 2x crossing scheme.