silica


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to silica: silica sand, Silica dust

sil·i·ca

 (sĭl′ĭ-kə)
n.
A white or colorless crystalline compound, SiO2, which in the form of quartz and certain other minerals is a chief component of the earth's crust. Silica sand is used in making a wide variety of materials, such as glass and concrete.

[New Latin, from Latin silex, silic-, hard stone, flint.]

silica

(ˈsɪlɪkə)
n
1. (Elements & Compounds) the dioxide of silicon, occurring naturally as quartz, cristobalite, and tridymite. It is a refractory insoluble material used in the manufacture of glass, ceramics, and abrasives
2. (Elements & Compounds) short for silica glass
[C19: New Latin, from Latin: silex]

sil•i•ca

(ˈsɪl ɪ kə)

n.
the dioxide form of silicon, SiO2, occurring esp. as quartz sand, flint, and agate: used chiefly in the manufacture of glass, water glass, ceramics, and abrasives.
[1795–1805; < New Latin, derivative of Latin silex hard stone, flint, boulder]

sil·i·ca

(sĭl′ĭ-kə)
Silicon dioxide, SiO2, a compound that occurs widely in rocks and mineral forms, such as quartz, sand, and flint, and is used to make glass, concrete, and other materials.

siliceous (sĭ-lĭsh′əs) adjective
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.silica - a white or colorless vitreous insoluble solid (SiO2)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
cristobalite - a white mineral consisting of silica; found in volcanic rocks
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
chert - variety of silica containing microcrystalline quartz
flint - a hard kind of stone; a form of silica more opaque than chalcedony
lechatelierite, quartz, quartz glass, vitreous silica, crystal - colorless glass made of almost pure silica
oxide - any compound of oxygen with another element or a radical
silex - a pure form of finely ground silica
tridymite - a mineral form of silica
Translations

silica

[ˈsɪlɪkə] Nsílice f

silica

[ˈsɪlɪkə] nsilice fsilica gel ngel m de silice

silica

nKieselerde f

silica

[ˈsɪlɪkə] nsilice f

silica

n sílice m
References in periodicals archive ?
The JM Huber Corporation has completed the sale of the Silica business unit of Huber Engineered Materials (HEM) to Evonik Industries AG.
Since Evoniks takeover of JM Hubers silica business in September 2017, the global silica expert has completely redesigned the brand profile of its silica portfolio.
Key statement: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber.
M2 EQUITYBITES-May 27, 2016-US Silica Acquires Additional Illinois Reserves
Target: 327-acre parcel of land adjacent to US Silica's existing silica sand mine and plant in Ottawa, Illinois
Demand for specific silica products is closely tied to the outlook for key end use industries.
Most miners are fully aware that exposure to high concentrations of respirable dust and crystalline silica (hereafter simply silica) can affect their health and future life, and many miners with longer tenure have co-workers who suffer from lung diseases caused by dust present in mines.
com)-- Future Market Insights (FMI) delivers key insights on the global specialty silica market in its latest report titled "Specialty Silica Market: Global Industry Analysis and Opportunity Assessment, 2015 - 2025.
A joint Occupational Safety and Health Administration and National Institute for Occupational Safety and Health Hazard Alert defines dust control measures to protect workers from significant crystalline silica exposure during manufacturing, finishing, and installing natural and manufactured stone countertops, leading types of which bear 60-95 percent silica content.
Summary: Silica was extracted from the locally obtained rice husk ash (RHA) by heating its dispersion in sodium hydroxide solution for various periods of time.
VICI Valco's nickel-clad tubing is available with tused silica (FS) tubing, PEEK tubing and polyimide-coated fused silica tubing.
On August 23,2013, OSHA released a proposal which considerably toughens its regulation of respirable crystalline silica by reducing the permissable exposure limit (PEL) to silica in half, from 100 (micrograms)/cu.