orthosilicicadj.

Brit.

/ˌɔːθə(ʊ)sᵻˈlɪsɪk/, U.S.

/ˈˌɔrθoʊsəˈlɪsɪk/

Origin: Formed within English, by compounding. Etymons: ortho- comb. form, silicic adj.

Etymology: < ortho- comb. form + silicic adj. Compare slightly earlier orthosilicate n.

Chemistry.

orthosilicic acid n. the acid H₄SiO₄, a weak acid made in solution by acidifying solutions of silicates. Cf. silicic acid at silicic adj.

ΚΠ

1868 G. Fownes Man. Elem. Chem. (ed. 10) 318 (table) Orthosilicic [acid]..SiO₄H₄.

1876 W. A. Tilden Introd. Study Chem. Philos. xxi. 191 Orthosilicic and orthocarbonic acids, H₄SiO₄ and H₄CO₄, are unknown, and but very few of their compounds have been studied.

1906 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 32 Metasilicic acid SiO₂.H₂O and orthosilicic acid SiO₂.2H₂O can be obtained under certain conditions of drying.

1938 H. L. Alling in C. W. Watkeys et al. Orientation in Sci. vi. 241 The majority of the rock-forming minerals are silicates. They can be regarded as salts of the following acids: orthosilicic, H₄SiO₄; metasilicic, H₂SiO₃; and trisilicic acid, H₄Si₃O₈.

1999 Better Nutrition (Nexis) 1 Apr. 40 Horsetail is a good herbal source of silicon, although primary-source silicon is also good, some of which features orthosilicic acid.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthosilicic
释义	orthosilicicadj. Brit. /ˌɔːθə(ʊ)sᵻˈlɪsɪk/, U.S. /ˈˌɔrθoʊsəˈlɪsɪk/ Origin: Formed within English, by compounding. Etymons: ortho- comb. form, silicic adj. Etymology: < ortho- comb. form + silicic adj. Compare slightly earlier orthosilicate n. Chemistry. orthosilicic acid n. the acid H₄SiO₄, a weak acid made in solution by acidifying solutions of silicates. Cf. silicic acid at silicic adj. ΚΠ 1868 G. Fownes Man. Elem. Chem. (ed. 10) 318 (table) Orthosilicic [acid]..SiO₄H₄. 1876 W. A. Tilden Introd. Study Chem. Philos. xxi. 191 Orthosilicic and orthocarbonic acids, H₄SiO₄ and H₄CO₄, are unknown, and but very few of their compounds have been studied. 1906 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 32 Metasilicic acid SiO₂.H₂O and orthosilicic acid SiO₂.2H₂O can be obtained under certain conditions of drying. 1938 H. L. Alling in C. W. Watkeys et al. Orientation in Sci. vi. 241 The majority of the rock-forming minerals are silicates. They can be regarded as salts of the following acids: orthosilicic, H₄SiO₄; metasilicic, H₂SiO₃; and trisilicic acid, H₄Si₃O₈. 1999 Better Nutrition (Nexis) 1 Apr. 40 Horsetail is a good herbal source of silicon, although primary-source silicon is also good, some of which features orthosilicic acid. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < adj.1868
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