plasmotomyn.

Brit.

/plazˈmɒtəmi/, U.S.

/plæzˈmɑdəmi/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: plasmo- comb. form, -tomy comb. form.

Etymology: < plasmo- comb. form + -tomy comb. form, after German Plasmotomie (F. Döflein 1898, in Zool. Jahrb. (Abt. f. Anat. u. Ontogenie) 11 317).

Biology.

A mode of reproduction in certain protozoans, in which the organism divides into two or more multinucleate daughter cells.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > by division

fission1846

scissiparity1857

fissiparation1864

fissuration1867

fissiparism1868

fissiparity1872

cleavage1876

fragmentation1881

schizogony1887

blastogenesis1889

nuclear fission1889

schizogenesis1891

transfission1891

heterokinesis1893

homoeokinesis1893

multiple fission1896

binary fission1897

plasmotomy1902

1902 Encycl. Brit. XXXII. 817/2 Cohn and Döflein have discovered cases of plasmotomy, in which a kind of protoplasmic bud of ectosarc and endosarc containing some nuclei becomes detached.

1947 Jrnl. Morphol. 80 96 Finally, the organism undergoes plasmotomy into from 2 to 6 individuals.

1973 M. A. Sleigh Biol. Protozoa iv. 72 Division of a cell is normally preceded by nuclear division, by either mitosis or meiosis, although in some multinucleate forms fission and nuclear division are not linked, so that for example new individuals may be formed by plasmotomy in which the body is simply separated into multinucleate masses—at any time some nuclei may be found in mitosis in such organisms.

1993 L. Margulis et al. Illustr. Gloss. Protoctista p. xix/2 When these multinucleated plasmodia reproduce as entities by cytokinesis, the reproductive process is called plasmotomy.

Derivatives

plasmoˈtomic adj.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > by division

fissiparous1835

tomiparous1842

scissiparous1845

tetraschistic1885

segmenting1912

plasmotomic1949

1949 Jrnl. Morphol. 85 164 Plasmotomic division into two daughter individuals does not results [sic] in a 50:50 distribution of the nuclei.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	plasmotomy
释义	plasmotomyn. Brit. /plazˈmɒtəmi/, U.S. /plæzˈmɑdəmi/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: plasmo- comb. form, -tomy comb. form. Etymology: < plasmo- comb. form + -tomy comb. form, after German Plasmotomie (F. Döflein 1898, in Zool. Jahrb. (Abt. f. Anat. u. Ontogenie) 11 317). Biology. A mode of reproduction in certain protozoans, in which the organism divides into two or more multinucleate daughter cells. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > by division fission1846 scissiparity1857 fissiparation1864 fissuration1867 fissiparism1868 fissiparity1872 cleavage1876 fragmentation1881 schizogony1887 blastogenesis1889 nuclear fission1889 schizogenesis1891 transfission1891 heterokinesis1893 homoeokinesis1893 multiple fission1896 binary fission1897 plasmotomy1902 1902 Encycl. Brit. XXXII. 817/2 Cohn and Döflein have discovered cases of plasmotomy, in which a kind of protoplasmic bud of ectosarc and endosarc containing some nuclei becomes detached. 1947 Jrnl. Morphol. 80 96 Finally, the organism undergoes plasmotomy into from 2 to 6 individuals. 1973 M. A. Sleigh Biol. Protozoa iv. 72 Division of a cell is normally preceded by nuclear division, by either mitosis or meiosis, although in some multinucleate forms fission and nuclear division are not linked, so that for example new individuals may be formed by plasmotomy in which the body is simply separated into multinucleate masses—at any time some nuclei may be found in mitosis in such organisms. 1993 L. Margulis et al. Illustr. Gloss. Protoctista p. xix/2 When these multinucleated plasmodia reproduce as entities by cytokinesis, the reproductive process is called plasmotomy. Derivatives plasmoˈtomic adj. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > by division fissiparous1835 tomiparous1842 scissiparous1845 tetraschistic1885 segmenting1912 plasmotomic1949 1949 Jrnl. Morphol. 85 164 Plasmotomic division into two daughter individuals does not results [sic] in a 50:50 distribution of the nuclei. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1902
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