pentaploidadj.n.
/ˈpɛntəplɔɪd/, U.S. /ˈpɛn(t)əˌplɔɪd/ Biology.
A. adj.
Containing five homologous sets of chromosomes; made up of somatic cells of this kind.
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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
1921 Ann. Bot. 35 185 Among the roses examined were diploid, tetraploid, pentaploid, and hexaploid forms.
1943 Bot. Gaz. 104 604/2 Beyond tetraploidy, apparently only two other forms have been detected: a hybrid pentaploid orange..and a hexaploid lemon.
1968 Canad. Jrnl. Genetics & Cytol. 10 910 Of the progeny obtained by backcrossing the pentaploid hybrid (AABBD) from the synthetic wheat to its tetraploid T[riticum] durum parent as male 49% had 28 chromosomes and 28% had 29 or 30.
1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xiii. 760 The cells of a pentaploid newt are roughly five times as big as those of a haploid.
B. n.
A pentaploid individual, type, or species.
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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
1921 Ann. Bot. 35 185 The remainder of the tetraploids, the whole of the pentaploids and hexaploids, showed a partial reduction involving fourteen or twenty-eight chromosomes.
1946 Nature 19 Oct. 536/1 The cytology of species of Magnolia has proved the existence of diploids.., tetraploids.., and pentaploids.
1988 Garden Dec. 583/1 Actually, this species is a balanced pentaploid with 84, 85 or 86 chromosomes.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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adj.n.1921- on the fall
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