manganousadj.

Brit.

/ˈmaŋɡənəs/, U.S.

/ˈmæŋɡənəs/

Forms: 1800s manganeous, 1800s– manganous.

Origin: Formed within English, by derivation. Etymons: mangan- comb. form, -ous suffix.

Etymology: < mangan- comb. form + -ous suffix. Compare French manganeux (1831). Compare earlier manganeseous adj., and note s.v. mangani- comb. form.With the form manganeous compare -eous suffix.

Chemistry.

Of or containing manganese, esp. in the divalent state.

ΚΠ

1823 W. Henry Elements Exper. Chem. (ed. 9) II. ix. 11 The constitution of the manganeous acid.

1842 T. Graham Elements Chem. ii. v. 530 Protoxide of manganese, Manganous oxide.

1884 Internat. Health Exhib. Official Catal. 49/2 Patent manganous carbon filters of various kinds.

1891 T. E. Thorpe Dict. Appl. Chem. II. 499/1 One-sixth of the weight of the manganous chloride employed.

1910 Encycl. Brit. I. 677/1 The first action of the lime is to convert the manganese chloride into manganous hydroxide (Mn(OH)₂).

1934 H. Hiler Notes Technique Painting ii. 132 Mineral violet (manganous metaphosphate).

1989 A. C. Davies Sci. & Pract. Welding (ed. 9) I. i. 57 Many oxides are used in arc welding fluxes, examples of which are:..manganous oxide MnO [etc.].

This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022).

单词	manganous
释义	manganousadj. Brit. /ˈmaŋɡənəs/, U.S. /ˈmæŋɡənəs/ Forms: 1800s manganeous, 1800s– manganous. Origin: Formed within English, by derivation. Etymons: mangan- comb. form, -ous suffix. Etymology: < mangan- comb. form + -ous suffix. Compare French manganeux (1831). Compare earlier manganeseous adj., and note s.v. mangani- comb. form.With the form manganeous compare -eous suffix. Chemistry. Of or containing manganese, esp. in the divalent state. ΚΠ 1823 W. Henry Elements Exper. Chem. (ed. 9) II. ix. 11 The constitution of the manganeous acid. 1842 T. Graham Elements Chem. ii. v. 530 Protoxide of manganese, Manganous oxide. 1884 Internat. Health Exhib. Official Catal. 49/2 Patent manganous carbon filters of various kinds. 1891 T. E. Thorpe Dict. Appl. Chem. II. 499/1 One-sixth of the weight of the manganous chloride employed. 1910 Encycl. Brit. I. 677/1 The first action of the lime is to convert the manganese chloride into manganous hydroxide (Mn(OH)₂). 1934 H. Hiler Notes Technique Painting ii. 132 Mineral violet (manganous metaphosphate). 1989 A. C. Davies Sci. & Pract. Welding (ed. 9) I. i. 57 Many oxides are used in arc welding fluxes, examples of which are:..manganous oxide MnO [etc.]. This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022). < adj.1823
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