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tributyrin
a bitter oily triglyceride of butyric acid; a form of butyrin
tributyrin: a bitter oily triglyceride of butyric acid; a form of butyrin
cacodyl
the univalent group derived from arsine
cacodyl: the univalent group derived from arsine
cacodyl
a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air
cacodyl: a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air
calcium_carbide
a grey salt of calcium (CaC) used in making acetylene
calcium_carbide: a grey salt of calcium (CaC) used in making acetylene
calcium-cyanamide
a compound used as a fertilizer and as a source of nitrogen compounds
calcium-cyanamide: a compound used as a fertilizer and as a source of nitrogen compounds
calcium_hypochlorite
any hypochlorite of calcium; used as a bleaching agent
calcium_hypochlorite: any hypochlorite of calcium; used as a bleaching agent
calcium_lactate
a white crystalline salt made by the action of lactic acid on calcium carbonate; used in foods (as a baking powder) and given medically as a source of calcium
calcium_lactate: a white crystalline salt made by the action of lactic acid on calcium carbonate; used in foods (as a baking powder) and given medically as a source of calcium
calcium_nitrate
a deliquescent salt that is soluble in water; sometimes used as a source of nitrogen in fertilizers
calcium_nitrate: a deliquescent salt that is soluble in water; sometimes used as a source of nitrogen in fertilizers
calcium_oxide
a white crystalline oxide used in the production of calcium hydroxide
calcium_oxide: a white crystalline oxide used in the production of calcium hydroxide
calcium_phosphate
a phosphate of calcium; a main constituent of animal bones
calcium_phosphate: a phosphate of calcium; a main constituent of animal bones
calcium_stearate
an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water
calcium_stearate: an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water
carbonyl
a compound containing metal combined with carbon monoxide
carbonyl: a compound containing metal combined with carbon monoxide
carbonyl_group
the bivalent radical CO
carbonyl_group: the bivalent radical CO
carboxyl
the univalent radical -COOH; present in and characteristic of organic acids
carboxyl: the univalent radical -COOH; present in and characteristic of organic acids
camphor
a resin obtained from the camphor tree; used in making celluloid and liniment
camphor: a resin obtained from the camphor tree; used in making celluloid and liniment
camphor_oil
oil distilled from camphor resin
camphor_oil: oil distilled from camphor resin
candelilla_wax
a hard brown wax that occurs as a coating on candelilla shrubs
candelilla_wax: a hard brown wax that occurs as a coating on candelilla shrubs
cane_sugar
sucrose obtained from sugar cane
cane_sugar: sucrose obtained from sugar cane
cannabin
a resin obtained from the hemp plant; thought to be the active narcotic agent in marijuana
cannabin: a resin obtained from the hemp plant; thought to be the active narcotic agent in marijuana
cannel_coal
a bituminous coal that burns with a luminous flame
cannel_coal: a bituminous coal that burns with a luminous flame
capric_acid
a fatty acid found in animal oils and fats; has an unpleasant smell resembling goats
capric_acid: a fatty acid found in animal oils and fats; has an unpleasant smell resembling goats
caproic_acid
a fatty acid found in animal oils and fats or made synthetically; smells like goats
caproic_acid: a fatty acid found in animal oils and fats or made synthetically; smells like goats
caprylic_acid
a fatty acid having a rancid taste; found in butter and other fats and oils
caprylic_acid: a fatty acid having a rancid taste; found in butter and other fats and oils
carbamate
a salt (or ester) of carbamic acid
carbamate: a salt (or ester) of carbamic acid
carbamic_acid
an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)
carbamic_acid: an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)
carbide
a binary compound of carbon with a more electropositive element
carbide: a binary compound of carbon with a more electropositive element
carbohydrate
an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain
carbohydrate: an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain
Carboloy
an alloy based on tungsten with cobalt or nickel as a binder; used in making metal-cutting tools
Carboloy: an alloy based on tungsten with cobalt or nickel as a binder; used in making metal-cutting tools
carbonado
an inferior dark diamond used in industry for drilling and polishing
carbonado: an inferior dark diamond used in industry for drilling and polishing
carbon_black
a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
carbon_black: a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
carcinogen
any substance that produces cancer
carcinogen: any substance that produces cancer
cellulose
a polysaccharide that is the chief constituent of all plant tissues and fibers
cellulose: a polysaccharide that is the chief constituent of all plant tissues and fibers
carboxymethyl_cellulose
an acid derivative of cellulose
carboxymethyl_cellulose: an acid derivative of cellulose
diethylaminoethyl_cellulose
used for chromatography
diethylaminoethyl_cellulose: used for chromatography
pulp
a mixture of cellulose fibers
pulp: a mixture of cellulose fibers
cartridge_brass
an alloy of copper and zinc (containing about 30% zinc) that is wrought into cartridges or tubing
cartridge_brass: an alloy of copper and zinc (containing about 30% zinc) that is wrought into cartridges or tubing
case-hardened_steel
steel with a surface that is much harder than the interior metal
case-hardened_steel: steel with a surface that is much harder than the interior metal
cellulose_ester
any ester of cellulose with an acid
cellulose_ester: any ester of cellulose with an acid
cellulose_nitrate
a nitric acid ester; used in lacquers and explosives
cellulose_nitrate: a nitric acid ester; used in lacquers and explosives
collodion
a colorless syrupy solution of pyroxylin in ether and alcohol; used as a coating for wounds or photographic films
collodion: a colorless syrupy solution of pyroxylin in ether and alcohol; used as a coating for wounds or photographic films
pyrocellulose
nitrocellulose containing less nitrogen than guncotton; used in making smokeless powder
pyrocellulose: nitrocellulose containing less nitrogen than guncotton; used in making smokeless powder
pyroxylin
highly flammable nitrocellulose used in making collodion and plastics and lacquers
pyroxylin: highly flammable nitrocellulose used in making collodion and plastics and lacquers
glycogen
one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body
glycogen: one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body
inulin
used to manufacture fructose and in assessing kidney function
inulin: used to manufacture fructose and in assessing kidney function
carbolic_acid
a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
carbolic_acid: a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
activated_carbon
powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons
activated_carbon: powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons
graphite
used as a lubricant and as a moderator in nuclear reactors
graphite: used as a lubricant and as a moderator in nuclear reactors
pencil
graphite (or a similar substance) used in such a way as to be a medium of communication
pencil: graphite (or a similar substance) used in such a way as to be a medium of communication
carbon_dioxide
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
carbon_dioxide: a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
chokedamp
the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life
chokedamp: the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life
carbon_disulfide
a toxic colorless flammable liquid (CS2); used in the manufacture of rayon and cellophane and carbon tetrachloride and as a solvent for rubber
carbon_disulfide: a toxic colorless flammable liquid (CS2); used in the manufacture of rayon and cellophane and carbon tetrachloride and as a solvent for rubber
carbon_monoxide
an odorless very poisonous gas that is a product of incomplete combustion of carbon
carbon_monoxide: an odorless very poisonous gas that is a product of incomplete combustion of carbon
carbon_paper
a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper
carbon_paper: a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper
carbon_tetrachloride
a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined
carbon_tetrachloride: a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined
carbon_tetrahalide
compounds composed of 1 carbon and 4 halogen molecules
carbon_tetrahalide: compounds composed of 1 carbon and 4 halogen molecules
carbonate
a salt or ester of carbonic acid (containing the anion CO3)
carbonate: a salt or ester of carbonic acid (containing the anion CO3)
fulminate
a salt or ester of fulminic acid
fulminate: a salt or ester of fulminic acid
mercury_fulminate
a fulminate that when dry explodes violently if struck or heated; used in detonators and blasting caps and percussion caps
mercury_fulminate: a fulminate that when dry explodes violently if struck or heated; used in detonators and blasting caps and percussion caps
carbonic_acid
a weak acid known only in solution; formed when carbon dioxide combines with water
carbonic_acid: a weak acid known only in solution; formed when carbon dioxide combines with water
abrasive
a substance that abrades or wears down
abrasive: a substance that abrades or wears down
carborundum
an abrasive composed of silicon carbide crystals
carborundum: an abrasive composed of silicon carbide crystals
cardboard
a stiff moderately thick paper
cardboard: a stiff moderately thick paper
cartridge_paper
paper for making cartridge cases
cartridge_paper: paper for making cartridge cases
cartridge_paper
thick white paper for pencil and ink drawings
cartridge_paper: thick white paper for pencil and ink drawings
card
thin cardboard, usually rectangular
card: thin cardboard, usually rectangular
cocarboxylase
a coenzyme important in respiration in the Krebs cycle
cocarboxylase: a coenzyme important in respiration in the Krebs cycle
coenzyme
a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes
coenzyme: a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes
coenzyme_A
a coenzyme present in all living cells; essential to metabolism of carbohydrates and fats and some amino acids
coenzyme_A: a coenzyme present in all living cells; essential to metabolism of carbohydrates and fats and some amino acids
cofactor
a substance (as a coenzyme) that must join with another to produce a given result
cofactor: a substance (as a coenzyme) that must join with another to produce a given result
congener
a minor chemical constituent that gives a wine or liquor its distinctive character
congener: a minor chemical constituent that gives a wine or liquor its distinctive character
corrugated_board
cardboard with corrugations (can be glued to flat cardboard on one or both sides)
corrugated_board: cardboard with corrugations (can be glued to flat cardboard on one or both sides)
paperboard
a cardboard suitable for making posters
paperboard: a cardboard suitable for making posters
pasteboard
stiff cardboard made by pasting together layers of paper
pasteboard: stiff cardboard made by pasting together layers of paper
millboard
stout pasteboard used to bind books
millboard: stout pasteboard used to bind books
strawboard
a coarse yellow cardboard made of straw pulp
strawboard: a coarse yellow cardboard made of straw pulp
carnelian
a translucent red or orange variety of chalcedony
carnelian: a translucent red or orange variety of chalcedony
carrageenin
a colloidal extract from carrageen seaweed and other red algae
carrageenin: a colloidal extract from carrageen seaweed and other red algae
ingot_iron
iron of high purity
ingot_iron: iron of high purity
cast_iron
an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting
cast_iron: an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting
pot_metal
cast iron used for making cooking wares
pot_metal: cast iron used for making cooking wares
wrought_iron
iron having a low carbon content that is tough and malleable and so can be forged and welded
wrought_iron: iron having a low carbon content that is tough and malleable and so can be forged and welded
steel
an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range
steel: an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range
stainless_steel
steel containing chromium that makes it resistant to corrosion
stainless_steel: steel containing chromium that makes it resistant to corrosion
carbon_steel
steel whose characteristics are determined by the amount of carbon it contains
carbon_steel: steel whose characteristics are determined by the amount of carbon it contains
crucible_steel
steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible
crucible_steel: steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible
Damascus_steel
a hard resilient steel often decorated and used for sword blades
Damascus_steel: a hard resilient steel often decorated and used for sword blades
steel_wool
a mass of woven steel fibers used as an abrasive
steel_wool: a mass of woven steel fibers used as an abrasive
cationic_detergent
a class of synthetic detergents in which the surface-active part of the molecule is the cation
cationic_detergent: a class of synthetic detergents in which the surface-active part of the molecule is the cation
cat's_eye
any of various gems (as chrysoberyl or chalcedony) that reflect light when cut in a rounded shape
cat's_eye: any of various gems (as chrysoberyl or chalcedony) that reflect light when cut in a rounded shape
cellulosic
a plastic made from cellulose (or a derivative of cellulose)
cellulosic: a plastic made from cellulose (or a derivative of cellulose)
cement
a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
cement: a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
cement
concrete pavement is sometimes referred to as cement
cement: concrete pavement is sometimes referred to as cement
cement
any of various materials used by dentists to fill cavities in teeth
cement: any of various materials used by dentists to fill cavities in teeth
reinforced_concrete
concrete with metal and/or mesh added to provide extra support against stresses
reinforced_concrete: concrete with metal and/or mesh added to provide extra support against stresses
hydraulic_cement
a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
hydraulic_cement: a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
cementite
a chemical compound that is a constituent of steel and cast iron; very hard and brittle
cementite: a chemical compound that is a constituent of steel and cast iron; very hard and brittle
ceresin
a white wax extracted from ozokerite
ceresin: a white wax extracted from ozokerite
cerulean_blue
light greenish-blue pigment consisting essentially of oxides of cobalt and tin
cerulean_blue: light greenish-blue pigment consisting essentially of oxides of cobalt and tin
cetrimide
a cationic detergent that is a powerful disinfectant
cetrimide: a cationic detergent that is a powerful disinfectant
chad
a small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape
chad: a small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape