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Polyploidy

 - 6 dictionary results

pol⋅y⋅ploid

  [pol-ee-ploid] Biology
Use Polyploidy in a Sentence
–adjective
1. having a chromosome number that is more than double the basic or haploid number.
–noun
2. a polyploid cell or organism.
Origin:
1915–20; poly- + -ploid

Related forms:
pol⋅y⋅ploi⋅dic, adjective
pol⋅y⋅ploi⋅dy, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To Polyploidy
pol·y·ploid   (pŏl'ē-ploid')   
adj.  Having one or more extra sets of chromosomes: a polyploid species; a polyploid cell.
n.  An organism with more than two sets of chromosomes.
pol'y·ploi'dy n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: 2polyploid
Function: noun
: a polyploid individual

Main Entry: poly·ploi·dy
Pronunciation: -"ploid-E
Function: noun
Inflected Form: plural -dies
: the condition of beingpolyploid
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

polyploid pol·y·ploid (pŏl'ē-ploid')
adj.
Having extra sets of chromosomes. n.
An organism with more than two sets of chromosomes.

pol'y·ploi'dy n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia

polyploidy

the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes. In other words, the polyploid cell or organism has three or more times the haploid chromosome number. Polyploidy arises as the result of total nondisjunction of chromosomes during mitosis or meiosis.

Learn more about polyploidy with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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