polyanionn.

Brit.

/ˌpɒlɪˈanʌɪən/, U.S.

/ˌpɑliˈænˌaɪˌɑn/,

/ˌpɑliˈænˌaɪən/

Origin: Formed within English, by compounding. Etymons: poly- comb. form, anion n.

Etymology: < poly- comb. form + anion n. Compare slightly earlier polyanionic adj., and also polycation n., polyion n.

Chemistry.

A negatively charged polyion.

ΘΚΠ

the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion > polyion > negatively charged

polyanion1931

1931 Chem. Abstr. 25 3261 The submicrons detected by the ultra-microscope are negatively charged and consist of aggregates of the polyanions [Pb₉]⁴⁻ or [Sn₉]⁴⁻.

1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. xii. 465 The formation of polyanions is quite common among the heavier non-metals.

1997 Science 29 Aug. 1232/2 Fabrication of multilayers by consecutive adsorption of polyanions and polycations..has been extended to other materials such as proteins or colloids.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polyanion
释义	polyanionn. Brit. /ˌpɒlɪˈanʌɪən/, U.S. /ˌpɑliˈænˌaɪˌɑn/, /ˌpɑliˈænˌaɪən/ Origin: Formed within English, by compounding. Etymons: poly- comb. form, anion n. Etymology: < poly- comb. form + anion n. Compare slightly earlier polyanionic adj., and also polycation n., polyion n. Chemistry. A negatively charged polyion. ΘΚΠ the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion > polyion > negatively charged polyanion1931 1931 Chem. Abstr. 25 3261 The submicrons detected by the ultra-microscope are negatively charged and consist of aggregates of the polyanions [Pb₉]⁴⁻ or [Sn₉]⁴⁻. 1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. xii. 465 The formation of polyanions is quite common among the heavier non-metals. 1997 Science 29 Aug. 1232/2 Fabrication of multilayers by consecutive adsorption of polyanions and polycations..has been extended to other materials such as proteins or colloids. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1931
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