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red_silk_cotton
a plant fiber from the red silk-cotton tree of eastern India; inferior to kapok
red_silk_cotton: a plant fiber from the red silk-cotton tree of eastern India; inferior to kapok
paraffin
(British usage) kerosine
paraffin: (British usage) kerosine
keratohyalin
hyaline in the large granules of the stratum granulosum
keratohyalin: hyaline in the large granules of the stratum granulosum
ketone
any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals
ketone: any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals
ketone_body
a ketone that is an intermediate product of the breakdown of fats in the body; any of three compounds (acetoacetic acid, acetone, and/or beta-hydroxybutyric acid) found in excess in blood and urine of persons with metabolic disorders
ketone_body: a ketone that is an intermediate product of the breakdown of fats in the body; any of three compounds (acetoacetic acid, acetone, and/or beta-hydroxybutyric acid) found in excess in blood and urine of persons with metabolic disorders
ketone_group
a group having the characteristic properties of ketones
ketone_group: a group having the characteristic properties of ketones
acetoacetic_acid
unstable acid found in abnormal amounts in the blood and urine in some cases of impaired metabolism (as diabetes mellitus or starvation)
acetoacetic_acid: unstable acid found in abnormal amounts in the blood and urine in some cases of impaired metabolism (as diabetes mellitus or starvation)
beta-hydroxybutyric_acid
beta derivative of hydroxybutyric acid that is found in the blood and urine in some cases of impaired metabolism
beta-hydroxybutyric_acid: beta derivative of hydroxybutyric acid that is found in the blood and urine in some cases of impaired metabolism
hydroxybutyric_acid
hydroxy derivative of butyric acid
hydroxybutyric_acid: hydroxy derivative of butyric acid
ketohexose
a monosaccharide having six carbon atoms and a ketone group
ketohexose: a monosaccharide having six carbon atoms and a ketone group
ketose
any monosaccharide sugar that contains a ketone group or its hemiacetal
ketose: any monosaccharide sugar that contains a ketone group or its hemiacetal
kinase
an enzyme that catalyzes the conversion of a proenzyme to an active enzyme
kinase: an enzyme that catalyzes the conversion of a proenzyme to an active enzyme
Kleenex
a piece of soft absorbent paper (usually two or more thin layers) used as a disposable handkerchief
Kleenex: a piece of soft absorbent paper (usually two or more thin layers) used as a disposable handkerchief
kunzite
a pinkish lilac crystal form of the mineral spodumene that is used as a gemstone
kunzite: a pinkish lilac crystal form of the mineral spodumene that is used as a gemstone
Kwell
a preparation of lindane (trade name Kwell) that is used to kill lice and itch mites; available in cream or shampoo
Kwell: a preparation of lindane (trade name Kwell) that is used to kill lice and itch mites; available in cream or shampoo
labdanum
a dark brown to greenish oleoresin that has a fragrant odor and is used as a fixative in perfumes; obtained as a juice from certain rockroses
labdanum: a dark brown to greenish oleoresin that has a fragrant odor and is used as a fixative in perfumes; obtained as a juice from certain rockroses
lacquer
a black resinous substance obtained from certain trees and used as a natural varnish
lacquer: a black resinous substance obtained from certain trees and used as a natural varnish
lactase
any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
lactase: any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
lactic_acid
a clear odorless hygroscopic syrupy carboxylic acid found in sour milk and in many fruits
lactic_acid: a clear odorless hygroscopic syrupy carboxylic acid found in sour milk and in many fruits
lactifuge
any agent that reduces milk secretion (as given to a woman who is not breast feeding)
lactifuge: any agent that reduces milk secretion (as given to a woman who is not breast feeding)
lactogen
any agent that enhances milk production
lactogen: any agent that enhances milk production
lactose
a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk
lactose: a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk
lamellar_mixture
a mixture in which substances occur in distinct layers
lamellar_mixture: a mixture in which substances occur in distinct layers
lapis_lazuli
an azure blue semiprecious stone
lapis_lazuli: an azure blue semiprecious stone
lard_oil
oil consisting chiefly of olein that is expressed from lard and used especially as a lubricant, cutting oil or illuminant
lard_oil: oil consisting chiefly of olein that is expressed from lard and used especially as a lubricant, cutting oil or illuminant
larvicide
a chemical used to kill larval pests
larvicide: a chemical used to kill larval pests
laterite
a red soil produced by rock decay; contains insoluble deposits of ferric and aluminum oxides
laterite: a red soil produced by rock decay; contains insoluble deposits of ferric and aluminum oxides
lath_and_plaster
a building material consisting of thin strips of wood that provide a foundation for a coat of plaster
lath_and_plaster: a building material consisting of thin strips of wood that provide a foundation for a coat of plaster
lauric_acid
a crystalline fatty acid occurring as glycerides in natural fats and oils (especially coconut oil and palm-kernel oil)
lauric_acid: a crystalline fatty acid occurring as glycerides in natural fats and oils (especially coconut oil and palm-kernel oil)
lauryl_alcohol
a colorless insoluble solid alcohol used to make detergents and pharmaceuticals
lauryl_alcohol: a colorless insoluble solid alcohol used to make detergents and pharmaceuticals
latten
brass (or a yellow alloy resembling brass) that was hammered into thin sheets; formerly used for church utensils
latten: brass (or a yellow alloy resembling brass) that was hammered into thin sheets; formerly used for church utensils
lava
rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
lava: rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
tuff
hard volcanic rock composed of compacted volcanic ash
tuff: hard volcanic rock composed of compacted volcanic ash
tufa
a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
tufa: a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
aa
a dry form of lava resembling clinkers
aa: a dry form of lava resembling clinkers
pahoehoe
freely flowing lava
pahoehoe: freely flowing lava
pillow_lava
lava that hardened in rounded shapes suggestive of pillows; believed to result from underwater eruptions
pillow_lava: lava that hardened in rounded shapes suggestive of pillows; believed to result from underwater eruptions
magma
molten rock in the earth's crust
magma: molten rock in the earth's crust
igneous_rock
rock formed by the solidification of molten magma
igneous_rock: rock formed by the solidification of molten magma
adesite
dark greyish extrusive rock
adesite: dark greyish extrusive rock
batholith
large mass of intrusive igneous rock believed to have solidified deep within the earth
batholith: large mass of intrusive igneous rock believed to have solidified deep within the earth
diorite
a granular crystalline intrusive rock
diorite: a granular crystalline intrusive rock
gabbro
one of a family of granular intrusive rocks
gabbro: one of a family of granular intrusive rocks
pegmatite
a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
pegmatite: a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
peridotite
a dark coarse-grained igneous rock consisting principally of olivine
peridotite: a dark coarse-grained igneous rock consisting principally of olivine
kimberlite
a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia
kimberlite: a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia
rhyolite
very acid volcanic rock
rhyolite: very acid volcanic rock
volcanic_rock
extrusive igneous rock solidified near or on the surface of the Earth
volcanic_rock: extrusive igneous rock solidified near or on the surface of the Earth
leaded_bronze
bronze to which 1-4% lead is added
leaded_bronze: bronze to which 1-4% lead is added
lead_ore
ore containing lead
lead_ore: ore containing lead
massicot
the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
massicot: the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
leaf_mold
soil composed mainly of decaying leaves
leaf_mold: soil composed mainly of decaying leaves
leaven
a substance used to produce fermentation in dough or a liquid
leaven: a substance used to produce fermentation in dough or a liquid
ledger_paper
a durable writing paper used in record books and business ledgers
ledger_paper: a durable writing paper used in record books and business ledgers
lepidocrocite
a red to reddish brown mineral consisting of iron oxide hydroxide; often found in iron ores together with goethite
lepidocrocite: a red to reddish brown mineral consisting of iron oxide hydroxide; often found in iron ores together with goethite
laid_paper
writing paper having a watermark of fine lines running across the grain
laid_paper: writing paper having a watermark of fine lines running across the grain
wove_paper
writing paper having a very faint mesh pattern
wove_paper: writing paper having a very faint mesh pattern
letter_paper
writing paper for use in writing correspondence
letter_paper: writing paper for use in writing correspondence
lindane
a white crystalline powder used as an agricultural insecticide
lindane: a white crystalline powder used as an agricultural insecticide
linen
a high-quality paper made of linen fibers or with a linen finish
linen: a high-quality paper made of linen fibers or with a linen finish
leucine
a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins
leucine: a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins
lignin
a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
lignin: a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
hydroxide
a compound of an oxide with water
hydroxide: a compound of an oxide with water
calcite
a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
calcite: a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
calcium_hydroxide
a caustic substance produced by heating limestone
calcium_hydroxide: a caustic substance produced by heating limestone
limestone
a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
limestone: a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
rottenstone
a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
rottenstone: a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
dripstone
the form of calcium carbonate found in stalactites and stalagmites
dripstone: the form of calcium carbonate found in stalactites and stalagmites
calcium_bicarbonate
a bicarbonate that is a major cause of hard water
calcium_bicarbonate: a bicarbonate that is a major cause of hard water
calcium_carbonate
a salt found in nature as chalk or calcite or aragonite or limestone
calcium_carbonate: a salt found in nature as chalk or calcite or aragonite or limestone
limewater
solution of calcium hydroxide in water used as an antacid
limewater: solution of calcium hydroxide in water used as an antacid
calcium_chloride
a deliquescent salt; used in de-icing and as a drying agent
calcium_chloride: a deliquescent salt; used in de-icing and as a drying agent
calcium_hydride
a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen
calcium_hydride: a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen
calcium_sulphate
a white salt (CaSO4)
calcium_sulphate: a white salt (CaSO4)
limonene
a liquid terpene with a lemon odor; found in lemons and oranges and other essential oils
limonene: a liquid terpene with a lemon odor; found in lemons and oranges and other essential oils
limonite
a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite
limonite: a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite
linoleic_acid
a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
linoleic_acid: a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
linolenic_acid
a liquid polyunsaturated fatty acid that occurs in some plant oils; an essential fatty acid
linolenic_acid: a liquid polyunsaturated fatty acid that occurs in some plant oils; an essential fatty acid
linoleum
a floor covering
linoleum: a floor covering
lint
fine ravellings of cotton or linen fibers
lint: fine ravellings of cotton or linen fibers
linuron
a herbicide that kills weeds without harming vegetables
linuron: a herbicide that kills weeds without harming vegetables
lipase
an enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream
lipase: an enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream
lipid
an oily organic compound insoluble in water but soluble in organic solvents; essential structural component of living cells (along with proteins and carbohydrates)
lipid: an oily organic compound insoluble in water but soluble in organic solvents; essential structural component of living cells (along with proteins and carbohydrates)
lipoprotein
a conjugated protein having a lipid component; the principal means for transporting lipids in the blood
lipoprotein: a conjugated protein having a lipid component; the principal means for transporting lipids in the blood
fluid
continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas
fluid: continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas
grume
a thick viscous liquid
grume: a thick viscous liquid
ichor
(Greek mythology) the rarified fluid said to flow in the veins of the Gods
ichor: (Greek mythology) the rarified fluid said to flow in the veins of the Gods
fluid
a substance that is fluid at room temperature and pressure
fluid: a substance that is fluid at room temperature and pressure
liquid
fluid matter having no fixed shape but a fixed volume
liquid: fluid matter having no fixed shape but a fixed volume
liquid
a substance that is liquid at room temperature and pressure
liquid: a substance that is liquid at room temperature and pressure
liquid_nitrogen
nitrogen in a liquid state
liquid_nitrogen: nitrogen in a liquid state
liquid_air
air in a liquid state
liquid_air: air in a liquid state
liquid_bleach
a solution containing bleaching agents; used for laundry
liquid_bleach: a solution containing bleaching agents; used for laundry
liquid_crystal
a liquid exhibiting properties of a crystal that are not shown by ordinary liquids
liquid_crystal: a liquid exhibiting properties of a crystal that are not shown by ordinary liquids
liquor
a liquid substance that is a solution (or emulsion or suspension) used or obtained in an industrial process
liquor: a liquid substance that is a solution (or emulsion or suspension) used or obtained in an industrial process
litmus
a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
litmus: a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
litmus_paper
unsized paper treated with litmus for use as an acid-base indicator
litmus_paper: unsized paper treated with litmus for use as an acid-base indicator
lithia_water
mineral water containing lithium salts
lithia_water: mineral water containing lithium salts
lithium_carbonate
a white powder (LiCO3) used in manufacturing glass and ceramics and as a drug; the drug (trade names Lithane or Lithonate or Eskalith) is used to treat some forms of depression and manic episodes of manic-depressive disorder
lithium_carbonate: a white powder (LiCO3) used in manufacturing glass and ceramics and as a drug; the drug (trade names Lithane or Lithonate or Eskalith) is used to treat some forms of depression and manic episodes of manic-depressive disorder
loam
a rich soil consisting of a mixture of sand and clay and decaying organic materials
loam: a rich soil consisting of a mixture of sand and clay and decaying organic materials