| 释义 |
polynuclear, a.|-ˈnjuːkliːə(r)|
[poly- 1]
a. Biol. Having several nuclei, multinucleate. Also, applied spec. to polymorphonuclear leucocytes. Also as n.
1876tr. Wagner's Gen. Pathol. (ed. 6) 273 In atrophic increase of fat, in polynuclear bone-cells. 1891[see myelocyte 2]. 1894Jrnl. Physiol. XVII. 85 The other term which was applied to the finely granular oxyphile cells by Metschnikoff and others, namely, ‘polynuclear leucocyte’ is not satisfactory, seeing that..the different nuclear masses..are, in point of fact, joined by threads or bars of nuclear substance so that the cell is really mononuclear with a very much branched nucleus. 1897[see polymorpho-nuclear a.]. 1901W. Osler Princ. & Pract. Med. i. 19 Acute diseases, in which the polynuclear neutrophiles are increased. 1907Med. Rev. X. 364/1 Centrifugalisation showed 68 per cent. of polynuclears, 14 per cent. of large mononuclears, and 18 per cent. of lymphocytes. 1935Trans. R. Soc. Trop. Med. & Hygiene XXVIII. 477 The polynuclear count can also be used in the study of populations in which some pathological element exists. 1936Ibid. XXX. 173 Infection provides a strong stimulus in modifying the percentage of neutrophiles with a segmented nucleus (polynuclear cells). 1967Jrnl. Reticuloendothelial Soc. IV. 168 (heading) Influence of serum on intracellular digestion of Staphylococcus aureus by polynuclear neutrophils from the guinea pig.
b. Chem. Of a complex: containing more than one metal atom. Of a compound: having more than one nucleus (nucleus n. 8).
1908Chem. Abstr. II. 1101 (heading) Polynuclear metalammonias. 1924W. Thomas Complex Salts v. 54 This latter compound is an example of what may be termed a polynuclear complex, since the complex contains more than one central atom. 1933Jrnl. Soc. Chem. Industry 8 Dec. 422t/2 Any polynuclear compound from, say, phenol possesses free positions in internal rings at which further condensation with formaldehyde..is possible. 1951I. L. Finar Org. Chem. I. xxix. 571 Polynuclear hydrocarbons may be divided into two groups, those in which the rings are isolated,..and those in which two or more rings are fused together in the o-positions. 1971Nature 20 Aug. 539/1 Studies of a synthetic and structural nature of polynuclear metal complexes containing hydrogen and organic groups as ligands may eventually allow a better understanding of heterogeneous reactions. |