oil consisting chiefly of olein that is expressed from lard and used especially as a lubricant, cutting oil or illuminant
larvicide
Noun
a chemical used to kill larval pests
laterite
Noun
a red soil produced by rock decay
lath and plaster
Noun
a building material consisting of thin strips of wood that provide a foundation for a coat of plaster
lauric acid
Noun
a crystalline fatty acid occurring as glycerides in natural fats and oils (especially coconut oil and palm-kernel oil)
lauryl alcohol
Noun
a colorless insoluble solid alcohol used to make detergents and pharmaceuticals
latten
Noun
brass (or a yellow alloy resembling brass) that was hammered into thin sheets
lava
Noun
rock that in its molten form, known as magma, issues from volcanos
limonene
Noun
a liquid terpene with a lemon odor
limonite
Noun
a widely occurring iron oxide ore
linoleic acid
Noun
a liquid polyunsaturated fatty acid abundant in plant fats and oils
linolic acid
Noun
a liquid polyunsaturated fatty acid abundant in plant fats and oils
linolenic acid
Noun
a liquid polyunsaturated fatty acid that occurs in some plant oils
linoleum
Noun
a floor covering
lino
Noun
a floor covering
linuron
Noun
a herbicide that kills weeds without harming vegetables
lipase
Noun
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
Noun
an oily organic compound insoluble in water but soluble in organic solvents
lipide
Noun
an oily organic compound insoluble in water but soluble in organic solvents
lipoid
Noun
an oily organic compound insoluble in water but soluble in organic solvents
lipoprotein
Noun
a conjugated protein having a lipid component
liquid nitrogen
Noun
nitrogen in a liquid state
liquid air
Noun
air in a liquid state
liquid bleach
Noun
a solution containing bleaching agents
liquid crystal
Noun
a liquid exhibiting properties of a crystal that are not shown by ordinary liquids
litmus
Noun
a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions
litmus paper
Noun
unsized paper treated with litmus for use as an acid-base indicator
lithia water
Noun
mineral water containing lithium salts
lithium carbonate
Noun
a white powder (LiCO3) used in manufacturing glass and ceramics and as a drug
loam
Noun
a rich soil consisting of a mixture of sand and clay and decaying organic materials
low-carbon steel
Noun
steel with less than 0.15% carbon
lodestone
Noun
a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically
loadstone
Noun
a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically
loess
Noun
a fine-grained unstratified accumulation of clay and silt deposited by the wind
low brass
Noun
brass with 30% or less zinc
low-density lipoprotein
Noun
a lipoprotein that transports cholesterol in the blood
low-level radioactive waste
Noun
(medicine) radioactive waste consisting of objects that have been briefly exposed to radioactivity (as in certain medical tests)
lye
Noun
a strong solution of sodium or potassium hydroxide
lymphokine
Noun
a cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages)
lysine
Noun
an essential amino acid found in proteins
lysozyme
Noun
an enzyme found in saliva and sweat and tears that destroys the cell walls of certain bacteria
lunar caustic
Noun
silver nitrate fused into sticks and formerly used as a caustic
lac dye
Noun
scarlet dye like cochineal
lead acetate
Noun
a poisonous white solid (Pb[CH3CO]2) used in dyeing cotton and in making enamels and varnishes
lysin
Noun
any substance (such as an antibody) or agent that can cause lysis
live steam
Noun
steam coming from a boiler at full pressure
lacrimator
Noun
a gas that makes the eyes fill with tears but does not damage them
lachrymator
Noun
a gas that makes the eyes fill with tears but does not damage them