: having slightly fewer than the diploid number of chromosomes

Word History

First Known Use

1962, in the meaning defined above

Time Traveler
The first known use of hypodiploid was in 1962

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Cite this Entry

“Hypodiploid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypodiploid. Accessed 8 Jul. 2026.

Medical Definition

hypodiploid

adjective
: having slightly fewer than the diploid number of chromosomes
hypodiploidy noun
plural hypodiploidies
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