Dictionary
Thesaurus
Medical
Scrabble®
Spanish Central
Browse DictionaryBrowse Thesaurus
Get our free apps!iPhone•iPad•Android
Games
Word of the Day
Video
Blog: Words at Play
My Faves
Dictionary

ploidy

noun ploi·dy \ˈplȯi-dē\

Definition of PLOIDY

:  degree of repetition of the basic number of chromosomes
ADVERTISEMENT

Origin of PLOIDY

from such words as diploidy, hexaploidy
First Known Use: 1939
Medical Dictionary

ploidy

noun ploi·dy \ˈplȯid-ē\
plural ploi·dies

Medical Definition of PLOIDY

:  degree of repetition of the basic number of chromosomes

Learn More About PLOIDY

Browse

Next Word in the Dictionary: PloimaPrevious Word in the Dictionary: -ploidAll Words Near: ploidy
ADVERTISEMENT
10 Charming Words for Nasty People
Put-downs with flair
Learn More
When "Literally" isn't, well, literal
How to use a word that (literally) drives some people nuts.
Watch Now
Know what this is?
Test your vocab with our fun, fast game
Go Play
Fear of cats?
Ailurophobia, and 9 other unusual fears
Learn More
Join Us
Merriam-Webster
on Facebook
Merriam-Webster
on Twitter
Bookstore: Digital and Print
Merriam-Webster references for Mobile, Kindle, print, and more.
See All
Other Merriam-Webster Dictionaries