paranucleolusn.
/ˌparənjuːˈklɪələs/, /ˌparənjuːklɪˈəʊləs/, U.S. /ˈˌpɛrəˌn(j)ukliˈoʊləs/, /ˈˌpɛrəˌn(j)uˈkliələs/ Cell Biology. Now rare.
Any of various intranuclear structures associated with or resembling a nucleolus. Also: a body extruded from a nucleus just before division.
ΚΠ
1887 Amer. Naturalist 21 21 The microsomata have concentrated to form a reticulated nucleolus, while the old nucleolus is left outside as a paranucleolus.
1894 Bot. Gaz. 19 421 The paranucleolus of Strasburger, a crescentic body found often at one margin of the nucleus, is due to faulty fixation methods.
1915 Science 19 Mar. 441/1 The nucleus contains, besides the usual chromatin bodies, a large typical plasmosome and a somewhat smaller body, the para-nucleolus.
1951 Arch. Néerlandaises de Zool. 10 7 The nucleus of the earliest oocyte possesses two nucleoli of unequal size which derive from the oogonium: the bigger eunucleolus..and the smaller paranucleolus.
1976 Cell & Tissue Res. 173 465 The nucleus contains both a paranucleolus and an eunucleolus.
This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).
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n.1887