heteroploid

1 of 2

adjective

het·​ero·​ploid ˈhe-tə-rə-ˌplȯid How to pronounce heteroploid (audio)
: having an abnormal chromosome number that deviates from the normal diploid number of a given species
heteroploid noun
heteroploidy noun

heteroploidy

2 of 2

noun

het·​er·​o·​ploi·​dy -dē How to pronounce heteroploidy (audio)
plural -es
: the condition of being heteroploid

Word History

Etymology

Adjective

International Scientific Vocabulary

First Known Use

Adjective

1926, in the meaning defined above

Time Traveler
The first known use of heteroploid was in 1926

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Cite this Entry

“Heteroploid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heteroploid. Accessed 27 Jun. 2026.

Medical Definition

heteroploid

adjective
het·​ero·​ploid ˈhet-ə-rə-ˌplȯid How to pronounce heteroploid (audio)
: having a chromosome number that is not a simple multiple of the haploid chromosome number
heteroploid noun
heteroploidy noun
plural heteroploidies
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