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silico-fluoric
silico-fluoric adj. 
/ˌsɪlᵻkə(ʊ)ˈflɔːrɪk/, /ˌsɪləkoʊˈflɔrɪk/
Brit. /ˌsɪlᵻkə(ʊ)ˈflʊərɪk/
, /ˌsɪlᵻkə(ʊ)ˈflʊərɪk//ˌsɪlᵻkə(ʊ)ˈflɔːrɪk/U.S. /ˌsɪləkoʊˈflʊrɪk/
, /ˌsɪləkoʊˈflʊrɪk//ˌsɪləkoʊˈflɔrɪk/ΚΠ
a1830 F. Lunn Chem. in Encycl. Metrop. (1845) IV. 656/1 The compounds of silicon and boron, being also Acids, [should] be called silico-fluoric and boro-fluoric Acids.
1868 Fownes's Chem. (ed. 10) 368 Silicofluoric acid gives a white precipitate with barium salts.
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