polyploidadj.n.
/ˈpɒlɪplɔɪd/, U.S. /ˈpɑliˌplɔɪd/, /ˈpɑləˌplɔɪd/ Biology.
A. adj.
Of a cell or its nucleus: containing more than two homologous sets of chromosomes. Of an organism or tissue: composed of such cells.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > ploidy
haploid1906
amphikaryotic1909
polyenergid1911
polyploid1911
triploid1911
tetraploid1914
hexaploid1920
octoploid1921
pentaploid1921
triplex1921
orthoploid1923
aneuploid1924
heteroploid1926
allopolyploid1927
monoploid1928
haplontic1929
hyperdiploid1929
amphidiploid1930
hyperploid1930
hypoploid1930
polysomic1930
mixoploid1931
allotetraploid1932
autopolyploid1934
autotetraploid1935
autoploid1937
polysomatic1937
monosomatic1939
polyploidizing1941
polyploidogenic1944
amphiploid1945
merodiploid1961
pseudodiploid1963
1911 Bot. Gaz. 52 163 High chromosome numbers can be shown to be the result of multiplication of whole chromosomes, so that the organism becomes polyploid.
1936 Discovery May 162/1 An account of the breeding behaviour of polyploid plants would be of almost universal interest.
1956 Nature 25 Feb. 384/2 By developing more constant euploid (or polyploid) cells.
1997 G. S. Helfman et al. Diversity of Fishes xiv. 228/2 Some cyprinids have chromosomes in the polyploid condition, an unusual occurrence among fishes.
B. n.
A polyploid organism.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > ploidy > individual
haploid1908
tetraploid1914
haplont1918
hexaploid1921
pentaploid1921
pseudotetraploid1923
octoploid1926
triploid1927
allopolyploid1928
autopolyploid1928
polyploid1928
hyperdiploid1929
allotetraploid1930
autotetraploid1930
hyperploid1930
hypoploid1930
autoploid1932
polysomic1933
mixoploid1939
monoploid1944
amphiploid1945
merozygote1956
merodiploid1964
1928 Jrnl. Genetics 19 243 A useful distinction has been made amongst polyploids..according as their gametic complements are constituted by the reduplication of similar series (auto-polyploidy)..or by the combination of dissimilar series (allopolyploidy).
1963 E. Mayr Animal Species & Evol. xv. 439 Two types of polyploids are distinguished that have a rather different significance in evolution: autopolyploids and allopolyploids.
1989 S. B. Hecht & A. Cockburn Fate of Forest ii. 24 Thus the original modest ear of corn becomes the larger and more luscious polyploids of recent human history.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
<
adj.n.1911