chromidiumn.
/krəʊˈmɪdɪəm/ A granule or strand of chromatin in the cell-body (see also quot. 1960).
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromatin > granules or strands of
idant1892
chromomere1896
chromiole1899
chromidium1906
chromidiosome1912
1906 Cambr. Nat. Hist. I. 30 In many Sarcodina and some Sporozoa the nucleus gives off small fragments into the cytoplasm or is resolved into them; they have been termed ‘chromidia’ by R. Hertwig.
1920 W. E. Agar Cytol. 208 Fusion or mingling of chromidia (chromidiogamy, Swarczewsky).
1960 L. Picken Organization of Cells vi. viii. 242 The cytoplasm..did not..contain a mass of granules but bundles of what appeared to be fibrils... For these structures, Bernhard et al. revived the term chromidia..first applied to cytoplasmic structures related in staining properties to the substance of the chromosomes. The new chromidium appeared to be associated with the RNA of the cytoplasm.
Derivatives
chroˈmidial adj.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > granules or strands of chromatin
chromidial1906
chromomeric1952
1906 Cambr. Nat. Hist. I. 52 The nucleus..often gives off ‘chromidial’ fragments.
chromidiˈogamy n. (see quots. 1912, 1920 at main sense).
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the world > life > biology > biological processes > cellular processes > [noun] > fusion
nuclear fusion1887
karyogamy1891
autogamy1898
chromidiogamy1912
plasmogamy1912
cytogamy1939
1912 E. A. Minchin Introd. Study Protozoa 126 The chromatin that undergoes syngamic union may be in the form either of chromidia or of nuclei; in the former case the process is termed chromidiogamy, in the second karyogamy.
chroˈmidiosome n. (quot. 1912).
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromatin > granules or strands of
idant1892
chromomere1896
chromiole1899
chromidium1906
chromidiosome1912
1912 E. A. Minchin Introd. Study Protozoa 65 (note) It is proposed in this work to use the term chromidiosome to denote the smallest chromatin-particles of which the chromidial mass is made up... The term ‘chromidiosome’ must therefore be applied to the ultimate, individual grain or particle of chromatin, alike whether it be lodged inside or outside a nucleus.
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2018).
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n.1906