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A multiple of the basic number of chromosomes in a cell.

[From diploidy and haploidy.]
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.


(ˈplɔɪ di)

the number of chromosome sets in the nucleus of a cell.
[1935–40; see -ploid, -y3]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Multiple regression analysis showed a relationship between embryo ploidy and decision regret, with a lower number of euploid embryos associated with a greater degree of regret.
The 25 individuals from each line were shucked, and a gill sample from each was processed for flow cytometry to assess ploidy by comparing relative DNA content to that from a diploid gill as a standard.
Several attempts to determine whether or not an embryo is aneuploid by inference from its morphokinetic behavior have been attempted but have failed to generate sufficiently robust data to support the use of morphological and/or time-lapse systems for the determination of embryo ploidy status (9, 10).
Other ancillary techniques, including conventional cytogenetics (karyotype), DNA ploidy analysis (flow cytometry, image analysis), and fluorescence in situ hybridization, have the limitation of not being able to establish maternal/parental contributions of chromosome complements and cannot absolutely determine the true diagnosis.
Prolonged thrombocytopenia following allogeneic hematopoietic stem cell transplantation and its association with a reduction in ploidy and an immaturation of megakaryocytes.
The additional poor prognostic indicators include DNA Ploidy, Tumour Grade and HER 2 over expression".4 The debate for and against organ preservation is becoming more relevant with increasing octogenarians and QoL concerns.
There are at least 24 species (KAFKAS et al., 2008) or 68 species having different ploidy levels (ANIL KUMAR et al., 2012) species.
DNA ploidy and cell cycle testing of tumors could return to the clinical laboratory.
Extraskeletal myxoid chondrosarcoma: a clinicopathologic, immunohistochemical, and ploidy analysis of 23 cases.
In adult malignancies there are many genes implicated in epigenetic copying that could be affected [12-16] and relatively little is known about the control of homologous gene silencing and the effect of ploidy. Also, the involvement of a ratifying system has been suggested, such as the p53, related DNA editing machinery [17-20].