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Definition of Polyploidy - 5 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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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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polyploidy   (pŏl'ē-ploi'dē)  Pronunciation Key 
The state or condition of being polyploid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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