permutiten.

Brit.

/pəˈmjuːtʌɪt/,

/ˈpəːmjᵿtʌɪt/, U.S.

/pərˈmjutaɪt/,

/ˈpərmjətaɪt/

Origin: A borrowing from German. Etymon: German Permutit.

Etymology: < German Permutit (1907 or earlier) < classical Latin permūtāre permute v. + German -it -ite suffix¹.

Any of a class of artificial zeolites which are widely used as ion exchangers, esp. for the softening of water; such zeolites collectively. permutite process n. the softening of water by treatment with permutite.

ΘΚΠ

the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > desalination or softening of water > [noun] > process

permutite process1907

the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion exchange > substance rich in basic ions > specific

permutite1907

1907 Chem. Abstr. 1 2755 He [sc. A. Feldoff] reports the use of Permutite (after Gans) in the refinery at Glogau where much better yields of sugar were obtained by its use than without it.

1917 A. Smith Introd. Inorg. Chem. (ed. 3) xxxv. 724 In the permutite process the water is simply filtered through sodium silico-aluminate.

1925 Glasgow Herald 13 Feb. 6/2 Under the head of artificial silicates mention should be made of glass, Portland cement, water glass, and the permutites.

1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 276/2 After partition between 70% alcohol and hexane the alcoholic layer is filtered through ‘permutite’ to remove adrenalin.

1974 D. W. Breck Zeolite Molecular Sieves i. 11 The accepted term for synthetic aluminosilicates which are crystallographically amorphous and are prepared for the ion exchange properties is ‘permutite’... The chemical composition of most permutites is represented by an empirical formula in terms of the oxides: Na₂O·Al₂O₃·xSiO₂·yH₂O in which x often has a value of 5–6.

2002 Acta Microbiol. Polonica 51 63 The addition of permutite seems to have a beneficial effect on the condition of the faecal matter of these animals.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	permutite
释义	permutiten. Brit. /pəˈmjuːtʌɪt/, /ˈpəːmjᵿtʌɪt/, U.S. /pərˈmjutaɪt/, /ˈpərmjətaɪt/ Origin: A borrowing from German. Etymon: German Permutit. Etymology: < German Permutit (1907 or earlier) < classical Latin permūtāre permute v. + German -it -ite suffix¹. Any of a class of artificial zeolites which are widely used as ion exchangers, esp. for the softening of water; such zeolites collectively. permutite process n. the softening of water by treatment with permutite. ΘΚΠ the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > desalination or softening of water > [noun] > process permutite process1907 the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion exchange > substance rich in basic ions > specific permutite1907 1907 Chem. Abstr. 1 2755 He [sc. A. Feldoff] reports the use of Permutite (after Gans) in the refinery at Glogau where much better yields of sugar were obtained by its use than without it. 1917 A. Smith Introd. Inorg. Chem. (ed. 3) xxxv. 724 In the permutite process the water is simply filtered through sodium silico-aluminate. 1925 Glasgow Herald 13 Feb. 6/2 Under the head of artificial silicates mention should be made of glass, Portland cement, water glass, and the permutites. 1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 276/2 After partition between 70% alcohol and hexane the alcoholic layer is filtered through ‘permutite’ to remove adrenalin. 1974 D. W. Breck Zeolite Molecular Sieves i. 11 The accepted term for synthetic aluminosilicates which are crystallographically amorphous and are prepared for the ion exchange properties is ‘permutite’... The chemical composition of most permutites is represented by an empirical formula in terms of the oxides: Na₂O·Al₂O₃·xSiO₂·yH₂O in which x often has a value of 5–6. 2002 Acta Microbiol. Polonica 51 63 The addition of permutite seems to have a beneficial effect on the condition of the faecal matter of these animals. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1907
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