polyploidy

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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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polyploidy - the condition of being polyploid
condition - a mode of being or form of existence of a person or thing; "the human condition"
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References in periodicals archive ?
But while it has more chromosomes than the species of octoploid hybrid strawberry that we eat, the decaploid fruit is much smaller.
The remaining polyploids are larger still, ranging to up to decaploids (10X) with 700-800 [micro]m diameter megaspores.
However, the most probable chromosome number for Pisidium may be 2n = ~190, as has been accurately counted for the decaploids Pisidium casertanum (Poli, 1791) and P.