sulfur

Definition of sulfur in English English dictionary: A yellowish green colour, like that of sulfur
sulfur colour:.; To treat with sulfur, or a sulfur compound, especially to preserve or to counter agricultural pests; A chemical element (symbol S) with an atomic number of 16; One of the elements present in varying quantities in coal, which contributes to environmental degradation through acid precipitationwhen coal is burned; an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions); see sulphur. the American spelling of sulphur. Nonmetallic chemical element, chemical symbol S, atomic number; A common extreme pressure (EP) additive used to resist metal-to-metal contact See Boundary Lubrication; It is very reactive but occurs native in deposits, as well as combined in various ores (e.g., pyrite, galena, cinnabar); in coal, petroleum, and natural gas; and in the water in sulfur springs. Sulfur is the third most abundant constituent of minerals and one of the four most important basic chemical commodities. Pure sulfur, a tasteless, odourless, brittle yellow solid, occurs in several crystalline and amorphous allotropes, including brimstone and flowers of sulfur. It combines, with valence 2, 4, or 6, with nearly all other elements. Its most familiar compound is hydrogen sulfide, a poisonous gas that smells like rotten eggs. All metals except gold and platinum form sulfides, and many ores are sulfides. The oxides are sulfur dioxide and sulfur trioxide, which when dissolved in water make sulfurous acid and sulfuric acid, respectively. Several sulfur compounds with halogen elements are industrially important. Sodium sulfite (Na2SO3) is a reducing agent used to pulp paper and in photography. Organic compounds with sulfur include several amino acids, the sulfa drugs, and many insecticides, solvents, and substances used in making rubber and rayon. sulfur bacteria sulfur dioxide sulfur butterfly; {i} nonmetallic element (Chemistry); treat with sulphur in order to preserve; "These dried fruits are sulphured"; Often used as a control for powdery mildew and rust It is also a nutrient for plants that acts with nitrogen to produce protoplasm in plant cells; {f} treat with sulfur; The most common disinfectant for wine Most winemakers feel that it is nearly impossible to produce stable wine without judicious use of sulfur products at one or more stages of vinification: just after the harvest to thwart fermentation by the wrong yeasts, in the cellar to prevent microbial spoilage and oxidation and at the time of bottling to protect the wine against exposure to air But as a general rule, the amount of sulfur used in the production of fine wine has never been lower than it is today; One of the elements present in varying quantities in coal Sulfur dioxide (S02) is produced as a gaseous by-product of coal combustion; A non-metallic element that is contained in coal and related to a variety of air pollution and mine drainage problems; One of the nine macronutrients Most soils have sufficient supplies of sulfur to insure healthy plants Sulfur is a component of some amino acids, proteins, and chlorophyll Pale or yellowish, weak young leaves can be a sign of sulfur deficiency; the deficiency can also lead to stunted growth or delayed ripening Sulfur can be used as a fungicide and as a control for mites and chiggers, but it is also harmful to beneficial insects and microorganisms Use it with care and only as a last resort; Sulfur has been used for centuries in winemaking to disinfect and to preserve wines by preventing oxidation The problem is that young Rieslings often show a significant level of sulfur dioxide gas in the nose, which is not really a pleasant odor These wines are meant for aging and, with time in the bottle, the smell will disappear as the sulfur binds with other compounds in the wine; A yellowish solid element The term is also used as a slang expression to refer to water containing hydrogen sulfide gas; - A pale yellow solid found in hydrocarbons, that when combusted, results in sulfur dioxide; Secondary macronutrient for plants, usually found as the sulfate divalent anion in soil solution Sulfur is a main component of a group of amino acids; A pale yellow, nonmetallic chemical element Sulfur compounds often have a strong smell, like rotten eggs; A common natural constituent of petroleum products While certain sulfur compounds are commonly used to improve the EP, or load-carrying, properties of an oil, high sulfur content in a petroleum product may be undesirable as it can be corrosive and create an environmental hazard when burned For these reasons, sulfur limitations are specified in the quality control of fuels, solvents, etc; {i} brimstone
sulfur acid: sulfuric acid
sulfur alcohol: a thiol or mercaptan
sulfur bacteria: plural form of sulfur bacterium
sulfur bacterium: Any of several bacteria which oxidize inorganic sulfur compounds, especially those bacteria of the genus Thiobacillus
sulfur bath: a curative bath in which the water used has sulfates dissolved in it; especially one in which the source of the water is a natural hot spring
sulfur butterfly: the cloudless sulfur
sulfur candle: A candle-shaped device that emits sulfur dioxide when burnt; used to fumigate rooms
sulfur candles: plural form of sulfur candle
sulfur cast: a cast made by pouring prill sulfur into a depression; used forensically to take casts of prints in snow
sulfur cockatoo: the sulfur-crested cockatoo
sulfur cone: a conical deposit of sulfur condensed from a fumarole
sulfur cycle: the natural cycle which includes the mineralization of organic sulfur to sulfide, oxidation of this to sulfate, and reduction of this to sulfide followed by microbial incorporation of this into organic compounds
sulfur dibromide: a gaseous binary compound, SBr2, of sulfur and bromine
sulfur dioxide: A toxic gas, of molecular formula SO2 that is found in the emissions of volcanos and those of burning coal or petroleum; dissolves in water to form sulfurous acid and, in the presence of oxygen, sulfuric acid, and is thus responsible for acid rain
sulfur ether: a thioether
sulfur fungus: a yellow fungus of the phylum Basidiomycetes, which grows on the sides of trees and can reach several metres in width; it is edible when small
sulfur hexafluoride: a gaseous binary compound, SF6, of sulfur and fluorine, used in the electricity industry as a dielectric
sulfur impression: a sulfur cast
sulfur match: a match whose head consists of a mixture containing sulfur; a small amount of phosphorus is included either on the match, or on a striking surface in the case of a safety match
sulfur monoxide: An unstable binary compound, SO, of sulfur and oxygen
sulfur mustard: a class of chlorinated alkyl mercaptans, used in chemical warfare as vesicants
sulfur nitride: an inorganic polymer, n, that has metallic properties
sulfur nitride: a simple binary compound of sulfur and nitrogen, S4N4, having a ring structure; it is explosive
sulfur ore: any ore containing elemental sulfur, or a sulfide from which it may be obtained
sulfur oxide: Any binary compound of sulfur and oxygen; either sulphur monoxide, sulfur dioxide or sulfur trioxide
sulfur oxides: plural form of sulfur oxide
sulfur parakeet: The ring-necked parakeet, Psittacula krameri
sulfur pearl: Alternative spelling of sulphur pearl
sulfur print: A technique used to examine the surface of a metal for sulfide inclusions
sulfur pyrites: the mineral pyrite
sulfur rain: rain that has a pale yellow colour caused by impurities picked up by the falling raindrops
sulfur salt: salt with about 3% added sulfur; supplied in blocks as a feed supplement for cattle and sheep
sulfur shower: a shower bath using sulfurous water, especially as part of a curative therapy
sulfur soap: A soap containing up to 10% of added sulfur, used as an antiseptic or antifungal treatment
sulfur spring: a spring of naturally sulfurous water, often of volcanic origin and therefore hot
sulfur tree: Any tree whose branches are covered with yellow club moss spores
sulfur trioxide: A corrosive liquid, SO3, which forms sulfuric acid on contact with water; made commercially by the oxidation of sulfur dioxide
sulfur tuft: A yellow poisonous fungus, Naematoloma fasciculare or Hypholoma fasciculare
sulfur works: An array of geothermal vents in the Lassen Volcanic National Park, California
sulfur yellow: a yellow colour similar to that of the element sulfur
sulfur-32: The major stable isotope of sulfur, 3216S, having sixteen protons and sixteen neutrons; it amounts to 95% of the element in nature
sulfur-33: A minor stable isotope of sulfur, 3316S, having sixteen protons and seventeen neutrons; it amounts to less than 1% of the element in nature
sulfur-34: A minor stable isotope of sulfur, 3416S, having sixteen protons and eighteen neutrons; it amounts to about 4% of the element in nature
sulfur-35: A radioactive isotope of sulfur, 3516S, having sixteen protons and nineteen neutrons, and a half-life of about 87 days; it is used as a tracer
sulfur-36: A minor stable isotope of sulfur, 3616S, having sixteen protons and twenty neutrons; it amounts to only 0.01% of the element in nature
sulfur-bottom: the blue whale
sulfur-bottom whale: the blue whale
sulfur-color: a yellow color similar to that of sulfur
sulfur-colored: having a yellow color similar to that of sulfur
sulfur-crested cockatoo: A large Australian cockatoo, Cacatua galerita, with a yellow erectile crest
sulfur bacteria: Any of a diverse group of bacteria that are capable of metabolizing sulfur and its compounds and are important in the sulfur cycle. Members of the genus Thiobacillus, widespread in marine and terrestrial habitats, react with sulfur to produce sulfates useful to plants; in deep ground deposits they generate sulfuric acid, which dissolves metals in mines and corrodes concrete and steel. Desulfovibrio desulficans reduces sulfates in waterlogged soils and sewage to hydrogen sulfide, a gas with the common rotten-egg odour
sulfur bacterium: Any of several bacteria that oxidize inorganic sulfur compounds, especially a rod-shaped, gram-negative bacterium of the genus Thiobacillus
sulfur dioxide: A toxic, irritating, colorless gas soluble in water, alcohol, and ether Used as a chemical intermediate, in paper pulping and ore refining, and as a solvent
sulfur dioxide: A colorless gas with an odor like a struck match produced by burning fossil fuels that contain a percentage of sulfur such as coal, oil, and natural gas Atmospheric emissions of sulfur dioxide combine with water vapor and oxygen to form sulfuric acid, a component of acid deposition Sulfur dioxide is listed as a criteria pollutant
sulfur dioxide: A colorless gas formed during the burning of fuels containing sulfur, such as coal Breathing SO2 may irritate the respiratory system and aggravate asthmatic symptoms
sulfur dioxide: A pungent, colorless, gaseous pollutant formed primarily by the combustion of fossil fuels
sulfur dioxide: A colorless, irritating gas formed by the burning of sulfur-containing material Sulfur dioxide can react with other atmospheric chemicals to form sulfuric acid
sulfur dioxide: A strong smelling, colorless gas that is formed by the burning of fossil fuels Power plants, which may use coal or oil high in sulfur content, can be major sources of SO2 SO2 and other sulfur oxides contribute to the problem of acid deposition SO2 is a criteria air pollutant
sulfur dioxide: A gas that causes acid rain Burning fossil fuels, such as coal, releases SO2 into the atmosphere Various EPA programs are reducing SO2 emissions, including the Acid Rain Program
sulfur dioxide: Poisonous gas primarily produced by burning coal, most notably in power plants Also a by-product of certain industrial processes, such as the production of paper and metal smelting Involved in the formation of acid rain
sulfur dioxide: A colorless, extremely irritating gas or liquid, SO, used in many industrial processes, especially the manufacture of sulfuric acid. the American spelling of sulphur dioxide. Inorganic compound, heavy, colourless, poisonous gas (SO2). It has a pungent, irritating odour (the smell of a just-struck match). It occurs in volcanic gases and dissolved in the waters of some warm springs. Huge quantities are made industrially for use as a bleach, as a reducing agent, and as sulfites, which are food preservatives. It is a precursor of the trioxide (SO3), used to make sulfuric acid. Sulfur dioxide is formed when sulfur-containing fuels are burned; in the atmosphere it can combine with water vapour to form sulfuric acid, a major component of acid rain
sulfur dioxide: A compound used to inhibit the growth of undesirable microorganisms and inhibit browning It gives an unpleasant match stick odor to wine when present in noticeable quantities
sulfur dioxide: A colorless, corrosive gas directly damaging to both plants and animals
sulfur dioxide: a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain
sulfur dioxide: A gas consisting of one sulfur atom and two oxygen atoms It is produced by life, by volcanoes, and during the combustion of fuels containing sulfur In the atmosphere it is converted into sulfuric acid aerosol, which may form hazes and serve as cloud condensation nuclei
sulfur dioxide: a criteria air pollutant that is a gas produced by burning coal and some industrial processes See also acid deposition, sulfu r dioxide park topics
sulfur dioxide: A gas produced from volcanic eruptions, ocean spray, organic decomposition and the burning of fossil fuels Sulfur dioxide is a component in the creation of acid precipitation This colorless gas has the chemical formula SO2
sulfur dioxide: A criteria air pollutant Sulfur dioxide is a gas produced by burning coal, most notably in power plants Some industrial processes, such as production of paper and smelting of metals, produce sulfur dioxide Sulfur dioxide is closely related to sulfuric acid, a strong acid Sulfur dioxide plays an important role in the production of acid rain
sulfur dioxide: a colorless, very irritating gas or liquid
sulfur dioxide: A gas released by Campden tablets and other metabisulfites that sterilizes and prevents oxidation in must and mead Harmless in recommended quantities, but may cause an allergic reaction in some people
sulfur dioxide: - A colorless, very irritating gas or liquid
sulfur dioxide: A chemical compound that when emitted to the atmosphere is considered to be a major component of acid rain One of the criteria pollutants regulated by the 1990 Clean Air Act Amendments, SO2 is emitted mainly by anthropogenic sources Sources include industrial point sources, such as coal fired electric utilities
sulfur dioxide: A heavy, pungent, colorless gas formed primarily by the combustion of fossil fuels This major air pollutant is unhealthy for plants, animals, and people
sulfur dioxide: a gas (SO2) consisting of one sulfur and two oxygen atoms Of interest because sulfur dioxide converts to an aerosol that is a very efficient light scatterer Also, it can convert into acid droplets consisting primarily of sulfuric acid
sulfur dioxide: is a form of air pollution that is a gas It results from the combustion of fuels that contain sulfur SO2 is most prevalent in the combustion of coal
sulfur dioxide: An emission that results primarily from the combustion of sulfur in hydrocarbons and contributes to acid rain and other air-quality problems
sulfur dioxide: A compound composed of one sulfur and two oxygen molecules Sulfur dioxide emitted into the atmosphere through natural and anthropogenic processes is changed in a complex series of chemical reactions in the atmosphere to sulfate aerosols These aerosols result in negative radiative forcing (i e , tending to cool the Earth's surface)
sulfur dioxide: a heavy, smelly gas which can be condensed into a clear liquid; used to make sulfuric acid, bleaching agents, preservatives and refrigerants; a major source of air pollution in industrial areas
sulfur hexafluoride: a colorless gas that is soluble in alcohol and ether; a powerful greehouse gas widely used in the electrical utility industry
sulfur oxide: any of several oxides of sulphur
sulfur paintbrush: plant of moist highland meadows having ragged clusters of pale yellow flowers
sulfur trioxide: A corrosive compound, SO, having three solid forms that may coexist in a given sample, used in the sulfonation of organic compounds
cloudless sulfur: a yellow butterfly, Phoebis sennae, found in the Americas
flowers of sulfur: yellow flakes of elemental sulfur, either as mined from a fumarole etc, or obtained by distillation
iron-sulfur cluster: a unit comprising two or more iron atoms and bridging sulfur ligands in an iron-sulfur protein
iron-sulfur clusters: plural form of iron-sulfur cluster
iron-sulfur protein: any protein in which iron is coordinated with cysteine sulfur and sometimes also with inorganic sulfur; they have electron transfer and enzymatic function
lime sulfur: A mixture of calcium polysulfides used as a fungicide and insecticide on deciduous trees
potash of sulfur: potassium sulfate
prill sulfur: elemental sulfur in nugget form
sulfured: Simple past tense and past participle of sulfur
sulphured: Alternative spelling of sulfured
sulphured: Simple past tense and past participle of sulphur
sulphuring: Present participle of sulphur
sulphuring: Alternative spelling of sulfuring
vegetable sulfur: Alternative spelling of vegetable sulphur
virgin sulfur: Alternative spelling of virgin sulphur
volcanic sulfur: Alternative spelling of volcanic sulphur
sulphur: {n} called also brimstone, is a simple sombustible substance, yellow, brittle, insoluble in water, but fusible in heat
Sulphur: quebrith
Sulphur: brimstone
sulfured: treated with sulfur
sulfuring: treatment with sulfur or sulfur compounds
sulfuring: present participle of sulfur
sulphur: 05; of prismatic sulphur, 1
sulphur: Generally regarded as an impurity in steel as it can have detrimental effects on strength, ductility and weldability as well as producing hot and cold shortness Its content in most steels is limited to a maximum of 0 050% Sulfur is beneficial to machining and is added to freecutting steels in amounts up to 0 35% with the manganese content increased to overcome any detrimental effects
sulphur: Any one of numerous species of yellow or orange butterflies of the subfamily Pierinæ; as, the clouded sulphur (Eurymus, or Colias, philodice), which is the common yellow butterfly of the Eastern United States
sulphur: {f} treat with sulphur
sulphur: Atomic weight 32
sulphur: treat with sulphur in order to preserve; "These dried fruits are sulphured"
sulphur: The specific gravity of ordinary octohedral sulphur is 2
sulphur: treat with sulphur in order to preserve; "These dried fruits are sulphured
sulphur: sulphur dioxide is added to wine as a disinfectant Sometimes it can be detected in recently bottled wine but the smell should dissipate after a few minutes contact with the air
sulphur: Element that occurs in a nature state or in compounds such as sulphides
sulphur: Symbol S
sulphur: Not normally applied specifically as a fertiliser, as it is included in several other fertilisers which are commonly applied, e g ammonium sulphate Powdered elemental sulphur is sometimes applied to turf and soil to reduce the soil pH, however, great care needs to be taken during application to ensure an even spread is given and also any thatch which is present is not of too high a density otherwise the sulphur can become lodged within the thatch, producing excessive localised acidity which would be detrimental to the sward quality
sulphur: an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
sulphur: A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out
sulphur: {i} nonmetallic element (Chemistry)
sulphur: in the form of sulphate salts
sulphur: An alternative spelling of sulfur (see "Alternative spellings" on that page)"
sulphur: sul·phur in AM, use sulfur Sulphur is a yellow chemical which has a strong smell. The air reeks of sulphur. a common light yellow chemical substance that burns with a very strong unpleasant smell, and is used in drugs, explosives, and industry. It is a chemical element : symbol S
sulphuring: Exposure to the fumes of burning sulphur, as in bleaching; the process of bleaching by exposure to the fumes of sulphur