Dictionary: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z


[pol-ee-ploid] /ˈpɒl iˌplɔɪd/ Biology

having a chromosome number that is more than double the basic or haploid number.
a polyploid cell or organism.
(of cells, organisms, etc) having more than twice the basic (haploid) number of chromosomes
an individual or cell of this type

1922, from German polyploidie (1910), from polyploid, from Greek poly- (see poly-) + -ploid, from comb. form of ploos “fold” (see fold (v.)) + -oid.

polyploid pol·y·ploid (pŏl’ē-ploid’)
Having extra sets of chromosomes. n.
An organism with more than two sets of chromosomes.
pol’y·ploi’dy n.
The state or condition of being polyploid.
Having more than two complete sets of chromosomes. Many plants that are polyploid, such as dandelions, are sterile but can reproduce by apomixis or other asexual means. Other polyploid plants are fertile. For example, durum wheat (Triticum turgidum durum), which is used to make pasta, is tetraploid (it has four sets of chromosomes), while bread wheat (Triticum aestivum) is hexaploid (six sets of chromosomes). Polyploid plants, if viable, are often larger or more productive than diploid plants, and plant breeders often deliberately produce such plants by crossing species or other means. In the animal kingdom, polyploidy is abnormal and often fatal.


Read Also:

  • Polypnea

    [pol-ip-nee-uh] /ˌpɒl ɪpˈni ə/ noun, Medicine/Medical. 1. rapid breathing; panting. polypnea pol·yp·ne·a (pŏl’ĭp-nē’ə) n. See tachypnea.

  • Polypnoea

    [pol-ip-nee-uh] /ˌpɒl ɪpˈni ə/ noun, Medicine/Medical. 1. rapid breathing; panting. polypnea pol·yp·ne·a (pŏl’ĭp-nē’ə) n. See tachypnea.

  • Polypod

    [pol-ee-pod] /ˈpɒl iˌpɒd/ adjective 1. (of insect larvae) having many feet. /ˈpɒlɪˌpɒd/ adjective 1. (esp of insect larvae) having many legs or similar appendages noun 2. an animal of this type

  • Polypody

    [pol-ee-poh-dee] /ˈpɒl iˌpoʊ di/ noun, plural polypodies. 1. any fern of the genus Polypodium, as P. vulgare, having creeping rootstocks, deeply pinnatifid evergreen fronds, and round, naked sori. /ˈpɒlɪˌpəʊdɪ/ noun (pl) -dies 1. any of various ferns of the genus Polypodium, esp P. vulgare, having deeply divided leaves and round naked sori: family Polypodiaceae 2. […]

Disclaimer: Polyploidy definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.