Silica

sil′i-ka, n. silicon dioxide, or silicic anhydride, a white or colourle substance, the most abundant solid constituent of our globe, existing both in the crystalline and in the amorphous form, the best examples of the former being rock-crystal, quartz, chalcedony, flint, sandstone, and quartzose sand; of the latter, opal.— n. Sil′icate , a salt of silicic acid.— adjs. Sil′icāted , combined or impregnated with silica; Silic′ic , pertaining to, or obtained from, silica; Silicif′erous , producing or containing silica.— n. Silicificā′tion , conversion into silica.— v.t. Silic′ify , to convert into silica: to render silicious.— v.i. to become silicious or flinty:— pr.p. silic′ifying; pa.p. silic′ifīed. — adjs. Silic′ious , Silic′eous , pertaining to, containing, or resembling silica.— n. Sil′icon , or Silic′ium , the base of silica, a non-metallic elementary substance, obtainable in three different forms, the amorphous, the graphitoid, and the crystalline. [L. silex , silicis , flint.] IMG:c349_bers_1908_Silicle_Silique.png_utm_source_en.wiki source.org_utm_campaign_parser_utm_content_thumbnail:Chambers_1908_Silicle_Silique.png-330px-Chambers_1908_Silicle_Silique.png?utm_source=en.wiki source.org _campaign=parser _content=thumbnail