ploidy

noun

ploi·dy ˈplȯi-dē

: degree of repetition of the basic number of chromosomes

Word History

Etymology

from such words as diploidy, hexaploidy

First Known Use

1939, in the meaning defined above

Time Traveler

The first known use of ploidy was in 1939

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Browse Nearby Words

-ploid

ploidy

Ploiesti

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Cite this Entry

Style

“Ploidy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ploidy. Accessed 24 Jul. 2025.

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Medical Definition

ploidy

noun

ploi·dy ˈplȯid-ē

plural ploidies

: degree of repetition of the basic number of chromosomes

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