Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having more than the usual number of complete sets of chromosomes in a single cell
  • n. a cell or organism that has more than the usual number of complete sets of chromosomes

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (genetics) an organism or cell having more than twice the haploid number of chromosomes
  • adj. of a cell or organism having more than twice the haploid number of chromosomes

Etymologies

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