Silica

Theme list: silica with definitions

55 entries

FRONT	WORD	BACK	DEFINITION
—	CLAY	S	[v. -ED, -ING, -S] [Wiktionary - Sense 1] A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics.
CN	OPAL	S	[n. -S] [Wiktionary - Sense 1] A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O.
—	SAND	SY	[v. -ED, -ING, -S] · to smooth by rubbing with an abrasive - SANDABLE [a.] (=sandable)
—	SIMA	RS	[n. -S] [Wiktionary - Sense 2] The lower layer of the earth's outer crust that underlies the sial and is rich in silica, iron, and magnesium.
—	GLASS	Y	[v. -ED, -ING, -ES] [Wiktionary - Sense 1] An amorphous solid, often transparent substance, usually made by melting silica sand with various additives (for most purposes, a mixture of soda, potash and lime is added).
—	OCHRE	ADS	[v. OCHRED, OCHRING, OCHRES] [Wiktionary - Sense 1] A clay earth pigment containing silica, aluminum and ferric oxide.
—	SILEX	—	[n. -ES] [Wiktionary - Sense 2] A finely ground relatively pure form of silicas used as a paint filler etc.
—	DOGGER	SY	[n. -S] [Wiktionary - Sense 3] A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron.
—	FELSIC	—	[a.] · consisting of feldspar and silicates
—	OOLITH	S	[n. -S] [Wiktionary - Sense 1] A spherical granule of which oolite is composed, formed by concentric accretion of thin layers of a mineral (usually calcium carbonate (limestone) but also others such as dolomite and silica) around a core; an ooid.
—	QUARTZ	—	[n. -ES] · a mineral
—	SIALIC	—	[n. -S] [Wiktionary - Sense 3] Composed predominantly of silica- and alumina-bearing minerals such as quartz and feldspar.
—	SILICA	S	[n. -S] [Wiktionary - Sense 2] Any of the silica group of the silicate minerals.
—	SPONGE	DRS	[v. SPONGED, SPONGEING or SPONGING, SPONGES] [Wiktionary - Sense 1] Any of various marine invertebrates of the phylum Porifera, that have a porous skeleton often of silica.
—	ZIRCON	S	[n. -S] [Wiktionary - Sense 1] A mineral occurring in tetragonal crystals, usually of a brown or grey colour and consisting of silica and zirconia.
—	COESITE	S	[n. -S] [Wiktionary - Sense 1] A high-pressure polymorph of silica found in extreme conditions such as the impact craters of meteorites, with the chemical composition of silicon dioxide, SiO₂.
—	LEUCITE	S	[n. -S] [Wiktionary - Sense 1] A mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, leucite is a potassium feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, leucite weathers rapidly and can only be seen as inclusions in freshly broken rock.
—	SILEXES	—	[n. -ES] [Wiktionary - Sense 2] A finely ground relatively pure form of silicas used as a paint filler etc.
—	SILICAS	—	[n. -S] [Wiktionary - Sense 1] plural of silica
—	SILICIC	—	[a.] [Wiktionary - Sense 1] of, related to, or derived from silica
—	SILICON	ES	[n. -S] · a nonmetallic element / ----- { silicium silicon § siliciums silicons }
—	COESITES	—	[n. -S] [Wiktionary - Sense 1] A high-pressure polymorph of silica found in extreme conditions such as the impact craters of meteorites, with the chemical composition of silicon dioxide, SiO₂.
—	GANISTER	S	[n. -S] [Wiktionary - Sense 1] A hard, fine-grained sandstone, used in manufacturing silica bricks for lining furnaces.
—	SILICATE	S	[n. -S] [Wiktionary - Sense 1] Any salt of silica or of one of the silicic acids; any mineral composed of silicates.
—	SILICIDE	S	[n. -S] · a silicon compound
—	SILICIFY	—	[v. -FIED, -FYING, -FIES] [Wiktionary - Sense 1] to impregnate something with silica.
—	SODALITE	S	[n. -S] [Wiktionary - Sense 1] A mineral of alkaline igneous and plutonic rocks that are low in silica, of the chemical composition of sodium aluminum silicate with chlorine, Na₄Al₃Si₃O₁₂Cl. Pink sodalite is sometimes called hackmanite. Sodalite and lazurite form the sodalite Group of silicate minerals.
—	DESICCANT	S	[n. -S] [Wiktionary - Sense 1] A substance (such as calcium oxide or silica gel) that is used as a drying agent because of its high affinity for water.
—	GEYSERITE	S	[n. -S] · © a loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike~ masses, around some hot springs and geysers
—	IRONSTONE	S	[n. -S] [Wiktionary - Sense 1] Any ore of iron which is impure through the admixture of silica or clay.
—	NEPHELINE	S	[n. -S] [Wiktionary - Sense 1] A feldspathoid mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, nepheline is a plagioclase feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, nepheline weathers rapidly and can only be seen as inclusions in freshly broken rock.
—	PHYTOLITH	S	[n. -S] [Wiktionary - Sense 1] A small particle of silica or mineral that occurs in many plants.
—	SILICEOUS	—	[a.] [Wiktionary - Sense 1] Of, relating to, consisting of, or resembling silica or silicates.
—	SILICOSES	—	[n. -COSES] [Wiktionary - Sense 1] A disease of the lungs caused by the inhalation of crystalline silica dust.
—	SILICOSIS	—	[n. -COSES] [Wiktionary - Sense 1] A disease of the lungs caused by the inhalation of crystalline silica dust.
—	CHRYSOLITE	S	[n. -S] · © a mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; -- called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz
—	DESICCATOR	S	[n. -S] [Wiktionary - Sense 1] A closed glass vessel containing a desiccant (such as silica gel) used in laboratories for drying materials or for keeping them dry.
—	FIBREGLASS	—	[v. -ED, -ING, -S] [Wiktionary - Sense 1] Silica based glass extruded into fibers that possess a length at least 1000 times greater than their width.
—	GEYSERITES	—	[n. -S] · © a loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike~ masses, around some hot springs and geysers
—	PHYTOLITHS	—	[n. -S] [Wiktionary - Sense 1] A small particle of silica or mineral that occurs in many plants.
—	SILICIFIED	—	[v. -FIED, -FYING, -FIES] [Wiktionary - Sense 2] Impregnated with silica; petrified.
—	SILICIFIES	—	[v. -FIED, -FYING, -FIES] [Wiktionary - Sense 1] to impregnate something with silica.
—	ULTRABASIC	S	[n. -S] · (of such igneous rocks as peridotite) containing less than 45 per cent silica
—	ULTRAMAFIC	—	[a.] [Wiktionary - Sense 1] Describing igneous rocks that contain magnesium and iron and only a very small amount of silica, such as are found in the Earth’s mantle.
—	CHRYSOLITES	—	[n. -S] · © a mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; -- called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz
—	RADIOLARIAN	S	[n. -S] [Wiktionary - Sense 1] Any of many marine amoeboid protozoa, of subclass Radiolaria, having filamentous pseudopodia; they have intricate silica skeletons.
—	ROTTENSTONE	S	[n. -S] · a much-weathered limestone, rich in silica: used in powdered form for polishing metal
—	SILICIFYING	—	[v. -FIED, -FYING, -FIES] [Wiktionary - Sense 1] to impregnate something with silica.
—	SIMETHICONE	S	[n. -S] An oral antifoaming agent.
—	ULTRABASICS	—	[n. -S] · (of such igneous rocks as peridotite) containing less than 45 per cent silica
—	ULTRAMARINE	S	[n. -S] · © a blue pigment formerly obtained by powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides~ made in the fusion. Also used adjectively
—	ROTTENSTONES	—	[n. -S] · a much-weathered limestone, rich in silica: used in powdered form for polishing metal
—	ULTRAMARINES	—	[n. -S] · © a blue pigment formerly obtained by powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides~ made in the fusion. Also used adjectively
—	SILICIFICATION	S	[n. -S] [Wiktionary - Sense 1] Impregnation with silica; petrification.
—	SILICIFICATIONS	—	[n. -S] [Wiktionary - Sense 1] Impregnation with silica; petrification.

55 entries