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

  • adj. Having four times the haploid number of chromosomes in the cell nucleus: a tetraploid species.
  • n. A tetraploid individual.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having four times the haploid number of chromosomes in a cell nucleus
  • n. a tetraploid organism


Sorry, no etymologies found.


  • The organization of the bdelloid genome is tetraploid, that is, instead of the more usual one pair of chromosomes, there are 2 pairs of similar chromosomes.

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  • The most widely cultivated, L. diversifolia ssp. diversifolia, is line L Ieucocephala being self-fertile and "tetraploid" (2n = 104).

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  • There's a grim ring of truth to the episodes in which Mattie and her siblings make their own entertainment watching insects skitter across the surface of a septic tank; and there's no doubt that she knows her stuff when it comes to discussing tetraploid Italian ryegrass and distinctly unorganic compounds with names such as Promax.

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  • I also cut open several fruit I'd collected from the tetraploid hybrid "Inspiration."

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  • How do you know if your plants are diploid or tetraploid?

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  • Many of my daylilies are from my previous small garden and so I planted tetraploid rather than dips which are smaller scale to fit that space.

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  • Did the bdelloids evolve their tetraploid genome and the associated DNA repair mechanisms before they became adapted to life in ephemeral habitats or did the repair mechanisms originate after they started living under precarious conditions?

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  • Now we learn that Alec is a tetraploid, engineered from the genetic remnants of a long-extinct prehuman species, and that the Company made three of him.

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  • Then, just 8,000 years ago, another unusual mating between a tetraploid wheat species and a goatgrass gave an offspring with six sets of chromosomes: and this offspring gave us our modern bread wheats.

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  • Durum Wheat Durum wheat, T. turgidum durum, is the most important of the tetraploid wheats.

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