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pentaploid

[pen-tuh-ploid]
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adjective
  1. having a chromosome number that is five times the haploid number.
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noun
  1. a pentaploid cell or organism.
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Origin of pentaploid

First recorded in 1920–25; penta- + -ploid
Related formspen·ta·ploi·dy, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018