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Having a chromosome number that is not a multiple of the haploid number for the species.
A cell or an organism characterized by an aneuploid chromosome number.

an′eu·ploi′dy (-ploi′dē) 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aneuploidy - an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete)
abnormalcy, abnormality - an abnormal physical condition resulting from defective genes or developmental deficiencies
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References in periodicals archive ?
Duesberg says that these patterns may reflect essential chromosome changes needed to create a viable aneuploid cell from the original normal tissue.
The c-erbB-2 oncogene amplification by competitive PCR in aneuploid cell clones flow sorted from breast cancer samples.
Because HepG2 is an aneuploid cell line (modal number = 55 chromosomes; range = 50-60 chromosomes), we calculated SCE per chromosome.
Boveri said that the interval between the time of the insult and the origin of a tumor may be explained by the assumption that the cancer-causing agent first interferes with the process of cell division, producing an aneuploid cell. In the second step, the aneuploid cell must be stimulated to divide further, producing daughter aneuploid cells.
Samples that lacked dysplasia displayed mixed diploid, and mild to moderately aneuploid cell populations in 5% of cases, which were more numerous in cases of dysplasia (60%) and adenocarcinoma (88%).
Aneuploid cell populations and those samples with a higher percentage of cells in the S phase suggest the presence of higher grade cancers or CIS.
(9) with slight modifications using FAST FISH prenatal enumeration probe kit (Cytocell, UK) to detect the aneuploid cells frequency of spermatozoa in infertile men.