SILICA
Adair's New Encyclopedia · 1923 · p. 5
silicon oxide (SiOz)n; white amorphous powder, also crystallized and vitreous; insoluble in water and all acids except fluoric; solubie in alkalies.
Bu kavram başka kaynaklarda da geçiyor
Hawkins' Electrical Dictionary (1915)
The American Illustrated Medical Dictionary (1913)
Chamber's Twientieth Century Dictionary (1908)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopedic Medical Dictionary (1894)
Zell's Condensed Dictionary (1879)
Dictionary of Science, Literature and Art (1854)
Dictionary of Science, Literature and Art (1842)
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