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centroplasm
centroplasm n.
Brit. 
/ˈsɛntrə(ʊ)plaz(ə)m/
, /ˈsɛntrə(ʊ)plaz(ə)m/U.S. /ˈsɛntrəˌplæz(ə)m/
Biology a central zone or region of cytoplasm; spec. (a) the cytoplasm within, or immediately surrounding, the centrosome; (b) a more or less distinct central region in many cyanobacterial cells, containing less photosynthetic pigment and more nucleic acid material than the peripheral cytoplasm (chromatoplasm)./ˈsɛntrəˌplæz(ə)m/ΚΠ
1891 Jrnl. Coll. Sci. Imperial Univ. Japan 4 57 There is always more or less concentration of protoplasm toward the centre [of a spider egg] which may be called the centroplasm.
1897 Jrnl. Royal Microsc. Soc. 192 Dr. R. von Erlanger..concludes that the centrodeutoplasm (= archoplasm) consists of a special substance which is not present in the centroplasm [German Centroplasma] (= attraction-sphere) of ova and of somatic cells.
1921 Physiol. Abstr. 6 228 The protoplast in the Cyanophyceæ consists of two parts, chromatoplasm and a hyaline centroplasm.
1989 Plant Physiol. 89 784/1 The label was found predominantly in the thylakoid regions and was practically absent from the centroplasm.
2009 W. Platzer Color Atlas Human Anat. (ed. 6) I. 4/2 Together with the specialized cytoplasm surrounding them, the centroplasm, they [sc. the centrioles] form the centrosome.
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as lemmas
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