单词 | nucleated |
释义 | nucleatedadj. 1. Biology. Esp. of a cell: having a nucleus or central body.The nucleus (or ‘cytoblast’) was supposed by some mid 19th-cent. writers to give rise to the cell, and the nucleated cell was therefore supposed to be a distinct stage in the earliest development of an organism. ΘΚΠ the world > life > biology > substance > cell > cell organelle or contents > [adjective] > having nucleus nucleated1809 nuclear1846 nucleate1846 nucular1943 1809 W. Martin Outl. Attempt Knowl. Extraneous Fossils 68 Nucleated.., having an internal nucleus. 1840 Philos. Trans. (Royal Soc.) 130 591 On examining the germinal vesicle in a Bird, in one of the Batrachian Reptiles, and in several osseous Fishes, I find it in many instances to contain—not merely spots but—nucleated cells. 1844 R. Chambers Vestiges Nat. Hist. Creation 204 The nucleated vesicle, the fundamental form of all organization, we must regard as the meeting-point between the inorganic and the organic. 1866 N. Amer. Rev. Apr. 630 All the phases of development, from the nucleated cell to the perfect individual, are passed through without interruption. 1880 H. C. Bastian Brain 40 The cell in this case is only a nucleated expansion of the fibre. 1904 Brit. Med. Jrnl. 10 Sept. 584 A stage when almost all the red cells are nucleated, and most of them megaloblastic. 1968 Jrnl. Pediatrics 73 790/1 The low hemoglobin, high reticulocyte counts, and increased numbers of nucleated red cells are explained on the basis of hemolytic anemia. 1992 Saudi Med. Jrnl. 13 175 In common with many other nucleated cells, thyroid follicular cells are relatively resistant to lysis by homologous complement. 2. Chiefly Astronomy and Physics. Having one or more nuclei or points of greater density. Now rare. ΚΠ 1847 Westm. & Foreign Q. Rev. Jan. 375 The next stage he [sc. Herschel] conceived to be seen in the nucleated nebulæ; the nebulous stars he believed to be in a still more advanced state; and the defined stars to represent the perfect condition of the whole. 1852 W. Fishbough Macrocosm & Microcosm I. viii. 91 We have supposed that the mass was successively developed from a chaotic, to a nucleated, and spheroidal form. a1872 G. MacHenry Time & Eternity in Atlantic Monthly Jan. 108/2 Archipelagoes of nebulæ on high, And nucleated orbicles on wings of fire molecular. 1902 Science 31 Jan. 177/1 Looking centrally through the receiver containing saturated benzine vapor and nucleated air. 1903 Nature 8 Oct. 549/2 The subsidence of the invisible nucleated air. 3. Clustered together around a focus or central point (esp. of buildings in villages). Also (occasionally): (of a family) nuclear rather than extended; nuclearized. ΘΚΠ the world > space > relative position > arrangement or fact of being arranged > state of being gathered together > [adjective] > gathering closely together > gathered closely together clusteredc1400 sadc1450 constellated1638 constellatea1657 undistributed1869 retractile1881 clumped1887 nucleated1897 society > inhabiting and dwelling > inhabited place > district in relation to human occupation > town as opposed to country > village > [adjective] > clustered nucleated1897 1897 Eng. Hist. Rev. Apr. 314 The Germanic nucleated village is distinguished from the isolated homestead. 1942 Rep. Comm. Land Utilisation in Rural Areas 11 in Parl. Papers 1941–2 (Cmd. 6378) IV. 421 In other parts, especially where the community was organised under the feudal or manorial systems, nucleated settlements or villages are the rule. 1970 N. Chadwick Celts v. 125 Most settlement sites, whether nucleated or individual, were enclosed. 1986 J. Stacey Are Feminists Afraid to leave Home? in J. Mitchell & A. Oakley What is Feminism? 219 The impoverished nucleated couples in the..[nuclear family] turn to a technocratic search for orgasms to compensate the emotional, spiritual, and sensual losses the decline of Family brings. 1991 Jrnl. Southern Afr. Stud. 17 429 During the period of indenture, the family structures typical of Indian society were largely sundered in the poor, nucleated immigrant and heavily male population. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < adj.1809 |
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