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dry_ice
solidified carbon dioxide; dry ice sublimates at -78.5 C and is used mainly as a refrigerant
dry_ice: solidified carbon dioxide; dry ice sublimates at -78.5 C and is used mainly as a refrigerant
solvent
a liquid substance capable of dissolving other substances
solvent: a liquid substance capable of dissolving other substances
solute
the dissolved matter in a solution; the component of a solution that changes its state
solute: the dissolved matter in a solution; the component of a solution that changes its state
solvate
a compound formed by solvation (the combination of solvent molecules with molecules or ions of the solute)
solvate: a compound formed by solvation (the combination of solvent molecules with molecules or ions of the solute)
solvating_agent
an agent that converts something into a solvate
solvating_agent: an agent that converts something into a solvate
viricide
an agent (physical or chemical) that inactivates or destroys viruses
viricide: an agent (physical or chemical) that inactivates or destroys viruses
alkahest
hypothetical universal solvent once sought by alchemists
alkahest: hypothetical universal solvent once sought by alchemists
soup
any composition having a consistency suggestive of soup
soup: any composition having a consistency suggestive of soup
sourdough
a leaven of dough in which fermentation is active; used by pioneers for making bread
sourdough: a leaven of dough in which fermentation is active; used by pioneers for making bread
spackle
powder (containing gypsum plaster and glue) that when mixed with water forms a plastic paste used to fill cracks and holes in plaster
spackle: powder (containing gypsum plaster and glue) that when mixed with water forms a plastic paste used to fill cracks and holes in plaster
spar
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
spar: any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
sparkle_metal
matte that has 74 percent copper
sparkle_metal: matte that has 74 percent copper
spiegeleisen
pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel
spiegeleisen: pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel
spill
liquid that is spilled
spill: liquid that is spilled
spelter
impure zinc containing about three percent lead and other impurities (especially in the form of ingots)
spelter: impure zinc containing about three percent lead and other impurities (especially in the form of ingots)
sperm_oil
an animal oil found in the blubber of the sperm whale
sperm_oil: an animal oil found in the blubber of the sperm whale
spice
aromatic substances of vegetable origin used as a preservative
spice: aromatic substances of vegetable origin used as a preservative
stacte
(Old Testament) one of several sweet-smelling spices used in incense
stacte: (Old Testament) one of several sweet-smelling spices used in incense
staff
building material consisting of plaster and hair; used to cover external surfaces of temporary structure (as at an exposition) or for decoration
staff: building material consisting of plaster and hair; used to cover external surfaces of temporary structure (as at an exposition) or for decoration
staphylococcal_enterotoxin
a soluble exotoxin produced by some strains of staphylococcus; a cause of food poisoning
staphylococcal_enterotoxin: a soluble exotoxin produced by some strains of staphylococcus; a cause of food poisoning
staphylococcal_enterotoxin_B
a form of staphylococcal enterotoxin that has been used as an incapacitating agent in biological warfare
staphylococcal_enterotoxin_B: a form of staphylococcal enterotoxin that has been used as an incapacitating agent in biological warfare
spinel
a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones
spinel: a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones
spinel_ruby
a spinel used as a gemstone (usually dark red)
spinel_ruby: a spinel used as a gemstone (usually dark red)
almandine
a purple variety of the ruby spinel
almandine: a purple variety of the ruby spinel
balas
a pale rose-colored variety of the ruby spinel
balas: a pale rose-colored variety of the ruby spinel
Ceylonite
a dark-colored spinel containing iron
Ceylonite: a dark-colored spinel containing iron
rubicelle
a yellow or orange variety of ruby spinel
rubicelle: a yellow or orange variety of ruby spinel
solid_solution
a homogeneous solid that can exist over a range of component chemicals; a constituent of alloys that is formed when atoms of an element are incorporated into the crystals of a metal
solid_solution: a homogeneous solid that can exist over a range of component chemicals; a constituent of alloys that is formed when atoms of an element are incorporated into the crystals of a metal
spirits_of_ammonia
a solution of ammonium carbonate in ammonia water and alcohol
spirits_of_ammonia: a solution of ammonium carbonate in ammonia water and alcohol
spodumene
a pyroxene mineral consisting of lithium aluminum silicate; a source of lithium
spodumene: a pyroxene mineral consisting of lithium aluminum silicate; a source of lithium
hiddenite
a green transparent form of the mineral spodumene used as a gemstone
hiddenite: a green transparent form of the mineral spodumene used as a gemstone
spray
a pesticide in suspension or solution; intended for spraying
spray: a pesticide in suspension or solution; intended for spraying
stabilizer
a chemical that is added to a solution or mixture or suspension to maintain it in a stable or unchanging state
stabilizer: a chemical that is added to a solution or mixture or suspension to maintain it in a stable or unchanging state
stachyose
a tetrasaccharide found in the tubers of the Chinese artichoke
stachyose: a tetrasaccharide found in the tubers of the Chinese artichoke
stain
(microscopy) a dye or other coloring material that is used in microscopy to make structures visible
stain: (microscopy) a dye or other coloring material that is used in microscopy to make structures visible
counterstain
a stain of contrasting color that is used when the principal stain does not show the structure clearly
counterstain: a stain of contrasting color that is used when the principal stain does not show the structure clearly
Gram's_solution
a solution used in staining bacteria by Gram's method; consists of one part iodine and two parts potassium iodide and 300 parts water
Gram's_solution: a solution used in staining bacteria by Gram's method; consists of one part iodine and two parts potassium iodide and 300 parts water
stannite
a dark grey mineral with a metallic luster that is a source of tin
stannite: a dark grey mineral with a metallic luster that is a source of tin
star_sapphire
a sapphire that when cut shows a starlike figure in reflected light because of its crystalline structure
star_sapphire: a sapphire that when cut shows a starlike figure in reflected light because of its crystalline structure
starch
a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles
starch: a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles
arrowroot
a nutritive starch obtained from the root of the arrowroot plant
arrowroot: a nutritive starch obtained from the root of the arrowroot plant
cornstarch
starch prepared from the grains of corn; used in cooking as a thickener
cornstarch: starch prepared from the grains of corn; used in cooking as a thickener
sago
powdery starch from certain sago palms; used in Asia as a food thickener and textile stiffener
sago: powdery starch from certain sago palms; used in Asia as a food thickener and textile stiffener
pearl_sago
sago ground into small round grains
pearl_sago: sago ground into small round grains
amyloid
a non-nitrogenous food substance consisting chiefly of starch; any substance resembling starch
amyloid: a non-nitrogenous food substance consisting chiefly of starch; any substance resembling starch
Otaheite_arrowroot
a starch obtained from the root of the pia
Otaheite_arrowroot: a starch obtained from the root of the pia
steam
water at boiling temperature diffused in the atmosphere
steam: water at boiling temperature diffused in the atmosphere
live_steam
steam coming from a boiler at full pressure
live_steam: steam coming from a boiler at full pressure
water_vapor
water in a vaporous form diffused in the atmosphere but below boiling temperature
water_vapor: water in a vaporous form diffused in the atmosphere but below boiling temperature
vapor
a visible suspension in the air of particles of some substance
vapor: a visible suspension in the air of particles of some substance
softener
a substance added to another to make it less hard
softener: a substance added to another to make it less hard
water_softener
a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power
water_softener: a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power
soman
a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled
soman: a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled
spray
water in small drops in the atmosphere; blown from waves or thrown up by a waterfall
spray: water in small drops in the atmosphere; blown from waves or thrown up by a waterfall
sea_spray
spray from ocean waves
sea_spray: spray from ocean waves
spindrift
spray blown up from the surface of the sea
spindrift: spray blown up from the surface of the sea
stearic_acid
a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats
stearic_acid: a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats
stearin
an ester of glycerol and stearic acid
stearin: an ester of glycerol and stearic acid
Stellite
a very hard alloy of cobalt and chromium with cobalt as the principal ingredient; used to make cutting tools and for surfaces subject to heavy wear
Stellite: a very hard alloy of cobalt and chromium with cobalt as the principal ingredient; used to make cutting tools and for surfaces subject to heavy wear
sterling_silver
a silver alloy with no more than 7.5% copper
sterling_silver: a silver alloy with no more than 7.5% copper
sternutator
a chemical substance that causes sneezing and coughing and crying
sternutator: a chemical substance that causes sneezing and coughing and crying
steroid
any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
steroid: any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
nonsteroid
an organic compound that does no contain a steroid
nonsteroid: an organic compound that does no contain a steroid
ketosteroid
a steroid containing a ketone group
ketosteroid: a steroid containing a ketone group
sterol
any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
sterol: any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
cholesterol
an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
cholesterol: an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
HDL_cholesterol
the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
HDL_cholesterol: the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
LDL_cholesterol
the cholesterol in low-density lipoproteins; the `bad' cholesterol; a high level in the blood is thought to be related to various pathogenic conditions
LDL_cholesterol: the cholesterol in low-density lipoproteins; the `bad' cholesterol; a high level in the blood is thought to be related to various pathogenic conditions
oxidized_LDL_cholesterol
LDL cholesterol that has been bombarded by free radicals; it is thought to cause atherosclerosis
oxidized_LDL_cholesterol: LDL cholesterol that has been bombarded by free radicals; it is thought to cause atherosclerosis
ergosterol
a plant sterol that is converted into vitamin D by ultraviolet radiation
ergosterol: a plant sterol that is converted into vitamin D by ultraviolet radiation
bile_acid
any of the steroid acids generated in the liver and stored with bile
bile_acid: any of the steroid acids generated in the liver and stored with bile
cholic_acid
an insoluble crystalline acid present in bile
cholic_acid: an insoluble crystalline acid present in bile
bilge
water accumulated in the bilge of a ship
bilge: water accumulated in the bilge of a ship
cardiac_glycoside
obtained from a number of plants and used to stimulate the heart in cases of heart failure
cardiac_glycoside: obtained from a number of plants and used to stimulate the heart in cases of heart failure
digitalis
a powerful cardiac stimulant obtained from foxglove
digitalis: a powerful cardiac stimulant obtained from foxglove
render
a substance similar to stucco but exclusively applied to masonry walls
render: a substance similar to stucco but exclusively applied to masonry walls
stibnite
a soft grey mineral; the chief ore of antimony
stibnite: a soft grey mineral; the chief ore of antimony
sticks_and_stone
a general term for building materials
sticks_and_stone: a general term for building materials
wattle_and_daub
building material consisting of interwoven rods and twigs covered with clay
wattle_and_daub: building material consisting of interwoven rods and twigs covered with clay
stiffener
material used for stiffening something
stiffener: material used for stiffening something
streptodornase
an enzyme produced by some hemolytic strains of streptococcus that dissolves fibrinous secretions from infections; used medicinally (often in combination with streptokinase)
streptodornase: an enzyme produced by some hemolytic strains of streptococcus that dissolves fibrinous secretions from infections; used medicinally (often in combination with streptokinase)
streptokinase
an enzyme produced by some strains of streptococcus that can liquefy blood clots by converting plasminogen to plasmin; used medicinally in some cases of myocardial infarction and pulmonary embolism
streptokinase: an enzyme produced by some strains of streptococcus that can liquefy blood clots by converting plasminogen to plasmin; used medicinally in some cases of myocardial infarction and pulmonary embolism
streptolysin
any of several hemolysins derived from strains of streptococcus
streptolysin: any of several hemolysins derived from strains of streptococcus
stripper
a chemical compound used to remove paint or varnish
stripper: a chemical compound used to remove paint or varnish
strophanthin
a bitter and very toxic glycoside derived from plants of the genus Strophanthus; in moderate doses it is a cardiac stimulant but in larger doses it is a powerful poison; used in Africa as an arrow poison
strophanthin: a bitter and very toxic glycoside derived from plants of the genus Strophanthus; in moderate doses it is a cardiac stimulant but in larger doses it is a powerful poison; used in Africa as an arrow poison
strontianite
a mineral consisting of strontium carbonate
strontianite: a mineral consisting of strontium carbonate
stucco
a plaster now made mostly from Portland cement and sand and lime; applied while soft to cover exterior walls or surfaces
stucco: a plaster now made mostly from Portland cement and sand and lime; applied while soft to cover exterior walls or surfaces
sublimate
the product of vaporization of a solid
sublimate: the product of vaporization of a solid
tallow
obtained from suet and used in making soap, candles and lubricants
tallow: obtained from suet and used in making soap, candles and lubricants
vegetable_tallow
a waxy fat obtained from certain plants (e.g. bayberry) and used as tallow
vegetable_tallow: a waxy fat obtained from certain plants (e.g. bayberry) and used as tallow
sucrose
a complex carbohydrate found in many plants and used as a sweetening agent
sucrose: a complex carbohydrate found in many plants and used as a sweetening agent
jaggery
unrefined brown sugar made from palm sap
jaggery: unrefined brown sugar made from palm sap
structural_iron
iron that has been cast or worked in structural shapes
structural_iron: iron that has been cast or worked in structural shapes
structural_steel
a strong steel that is rolled into shapes that are used in construction
structural_steel: a strong steel that is rolled into shapes that are used in construction
sulfanilic_acid
a crystalline acid made from aniline and used as a dye
sulfanilic_acid: a crystalline acid made from aniline and used as a dye
sulfate
a salt or ester of sulphuric acid
sulfate: a salt or ester of sulphuric acid
sulfide
a compound of sulphur and some other element that is more electropositive
sulfide: a compound of sulphur and some other element that is more electropositive
sulfur_oxide
any of several oxides of sulphur
sulfur_oxide: any of several oxides of sulphur
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 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_hexafluoride
a colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry
sulfur_hexafluoride: a colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry