polycationicadj.

Brit.

/ˌpɒlɪkatʌɪˈɒnɪk/, U.S.

/ˈˌpɑliˌkædaɪˈɑnɪk/

Origin: Formed within English, by compounding. Etymons: poly- comb. form, cationic adj.

Etymology: < poly- comb. form + cationic adj. Compare earlier polyionic adj. and polyanionic adj., and later polycation n.

Chemistry.

Of, relating to, or of the nature of a polycation; containing polycations.

ΘΚΠ

the world > matter > chemistry > ions, ionization, or electrolysis > [adjective] > of or relating to ions > of or relating to polyions > of or relating to polycation

polycationic1934

1934 Proc. Royal Soc. B. 115 125 Lowering of the dielectric constant..will diminish the strength of ordinary acids, increase that of polycationic acids, and leave that of monocationic acids unaffected.

1970 R. W. McGilvery Biochemistry xix. 451 They [sc. spermine and spermidine] appear to occur in association with nucleic acids, as might be expected from their polycationic character.

1992 Jrnl. Physical Chem. 96 454/2 Ru(NH₃)₆³⁺ cations..do not associate with the polycationic PVP molecules.

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

单词	polycationic
释义	polycationicadj. Brit. /ˌpɒlɪkatʌɪˈɒnɪk/, U.S. /ˈˌpɑliˌkædaɪˈɑnɪk/ Origin: Formed within English, by compounding. Etymons: poly- comb. form, cationic adj. Etymology: < poly- comb. form + cationic adj. Compare earlier polyionic adj. and polyanionic adj., and later polycation n. Chemistry. Of, relating to, or of the nature of a polycation; containing polycations. ΘΚΠ the world > matter > chemistry > ions, ionization, or electrolysis > [adjective] > of or relating to ions > of or relating to polyions > of or relating to polycation polycationic1934 1934 Proc. Royal Soc. B. 115 125 Lowering of the dielectric constant..will diminish the strength of ordinary acids, increase that of polycationic acids, and leave that of monocationic acids unaffected. 1970 R. W. McGilvery Biochemistry xix. 451 They [sc. spermine and spermidine] appear to occur in association with nucleic acids, as might be expected from their polycationic character. 1992 Jrnl. Physical Chem. 96 454/2 Ru(NH₃)₆³⁺ cations..do not associate with the polycationic PVP molecules. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.1934
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