Definition of silica Silica

/sɪˈlʌkʌ/ - [siluku] - sil•ic•a

We found 6 definitions of silica from 5 different sources.

What does silica mean?

Noun Plural: silicas
silica - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
		silicon oxide, silicon dioxide
		oxide any compound of oxygen with another element or a radical
		quartz a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
		cristobalite a white mineral consisting of silica; found in volcanic rocks
		tridymite a mineral form of silica
		lechatelierite, quartz glass, vitreous silica, quartz, crystal colorless glass made of almost pure silica
		chert variety of silica containing microcrystalline quartz
		flint a city in southeast central Michigan near Detroit; automobile manufacturing

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silica (n.)
Silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder.

silica
sil′i-ka, n. silicon dioxide, or silicic anhydride, a white or colourless 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.]

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silica in sign language