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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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References in periodicals archive ?
A simple cytogenetic examination of the abnormal pronuclear stage would have been helpful to decide at least whether the number of whole chromosome sets has increased (the chromosomal constitution should then be in the pentaploid range) or whether an approximately diploid constitution is present.
perenniality allow gene flow even through triploid and pentaploid
Udensi & Ntui (2013) observed that when the induced polyploidy is a mixoploid, it could either be a diploid+triploid (2n+3n) or diploid+tetraploid (2n+4n) and if tilts towards the former, there is every likelihood of aborted process as affirmed by Meng & Finn (2002) that fertility is often poor if the hybrid is triploid, pentaploid,or an aneuploid with a chromosome number less than hexaploid.
A natural pentaploid strawberry genotype from the Changbai Mountains in Northeast China.
None of the grasses tested in the earlier studies is used in central and southern Florida, but the parents of 'Tifton 85' (an [F.sub.1] hybrid pentaploid between the bermudagrass PI 290884 (in the literature as 'Tifton 292') from South Africa and the stargrass (C.
1997) with the exception of Huanghua (Hebei Province) where a few tetraploid individuals appeared, and there are also a few triploid, tetraploid and pentaploid individuals that appeared in Balikun saltlake and Aibi saltlake in the Xinjiang autonomous region; therefore only diploid clones are being studied.
Rare pentaploid plants have been reported from interspecific artificial hybridization (Johnston, 1975; Burton et al., 1993).