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costus_oil
a yellow volatile essential oil obtained from costusroot; used in perfumes
costus_oil: a yellow volatile essential oil obtained from costusroot; used in perfumes
eucalyptus_oil
an essential oil obtained from the leaves of eucalypts
eucalyptus_oil: an essential oil obtained from the leaves of eucalypts
turpentine
volatile liquid distilled from turpentine oleoresin; used as paint thinner and solvent and medicinally
turpentine: volatile liquid distilled from turpentine oleoresin; used as paint thinner and solvent and medicinally
wormwood_oil
a dark bitter oil obtained from wormwood leaves; flavors absinthe liqueurs
wormwood_oil: a dark bitter oil obtained from wormwood leaves; flavors absinthe liqueurs
linalool
a colorless fragrant liquid found in many essential oils
linalool: a colorless fragrant liquid found in many essential oils
resin
any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
resin: any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
natural_resin
a plant exudate
natural_resin: a plant exudate
amber
a hard yellowish to brownish translucent fossil resin; used for jewelry
amber: a hard yellowish to brownish translucent fossil resin; used for jewelry
urea-formaldehyde_resin
a clear thermosetting resin made from urea and formaldehyde and used in electrical fittings, adhesives, and finishes
urea-formaldehyde_resin: a clear thermosetting resin made from urea and formaldehyde and used in electrical fittings, adhesives, and finishes
copal
a brittle aromatic resin used in varnishes
copal: a brittle aromatic resin used in varnishes
copalite
partly mineralized copal dug from the ground
copalite: partly mineralized copal dug from the ground
congo_copal
copal found usually as a fossil
congo_copal: copal found usually as a fossil
kauri
resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum
kauri: resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum
dammar
any of various hard resins from trees of the family Dipterocarpaceae and of the genus Agathis; especially the amboyna pine
dammar: any of various hard resins from trees of the family Dipterocarpaceae and of the genus Agathis; especially the amboyna pine
Zanzibar_copal
a hard copal derived from an African tree
Zanzibar_copal: a hard copal derived from an African tree
colophony
translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments
colophony: translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments
mastic
an aromatic exudate from the mastic tree; used chiefly in varnishes
mastic: an aromatic exudate from the mastic tree; used chiefly in varnishes
oleoresin
a naturally occurring mixture of a resin and an essential oil; obtained from certain plants
oleoresin: a naturally occurring mixture of a resin and an essential oil; obtained from certain plants
balsam
any of various fragrant oleoresins used in medicines and perfumes
balsam: any of various fragrant oleoresins used in medicines and perfumes
balm
any of various aromatic resinous substances used for healing and soothing
balm: any of various aromatic resinous substances used for healing and soothing
balm_of_Gilead
a fragrant oleoresin
balm_of_Gilead: a fragrant oleoresin
Canada_balsam
yellow transparent exudate of the balsam fir; used as a transparent cement in optical devices (especially in microscopy) and as a mounting medium
Canada_balsam: yellow transparent exudate of the balsam fir; used as a transparent cement in optical devices (especially in microscopy) and as a mounting medium
turpentine
obtained from conifers (especially pines)
turpentine: obtained from conifers (especially pines)
Chian_turpentine
a turpentine exuded by the terebinth
Chian_turpentine: a turpentine exuded by the terebinth
copaiba
an oleoresin used in varnishes and ointments
copaiba: an oleoresin used in varnishes and ointments
gum_resin
a mixture of resin and gum
gum_resin: a mixture of resin and gum
benzoin
gum resin used especially in treating skin irritation
benzoin: gum resin used especially in treating skin irritation
benzofuran
a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins
benzofuran: a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins
bdellium
aromatic gum resin; similar to myrrh
bdellium: aromatic gum resin; similar to myrrh
gamboge
a gum resin used as a yellow pigment and a purgative
gamboge: a gum resin used as a yellow pigment and a purgative
gum
any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
gum: any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
medium
an intervening substance through which something is achieved
medium: an intervening substance through which something is achieved
culture_medium
(bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms
culture_medium: (bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms
medium
(biology) a substance in which specimens are preserved or displayed
medium: (biology) a substance in which specimens are preserved or displayed
contrast_medium
a substance that is opaque to x-rays; when administered it allows a radiologist to examine the organ or tissue it fills
contrast_medium: a substance that is opaque to x-rays; when administered it allows a radiologist to examine the organ or tissue it fills
medium
a liquid with which pigment is mixed by a painter
medium: a liquid with which pigment is mixed by a painter
agar
a colloidal extract of algae; used especially in culture media and as a gelling agent in foods
agar: a colloidal extract of algae; used especially in culture media and as a gelling agent in foods
agar
any culture medium that uses agar as the gelling agent
agar: any culture medium that uses agar as the gelling agent
blood_agar
a culture medium containing whole blood as the nutrient
blood_agar: a culture medium containing whole blood as the nutrient
algin
a gum used especially as a thickener or emulsifier
algin: a gum used especially as a thickener or emulsifier
cherry-tree_gum
exudation from trees of the Prunus genus; resembles gum arabic
cherry-tree_gum: exudation from trees of the Prunus genus; resembles gum arabic
chicle
gum-like substance from the sapodilla
chicle: gum-like substance from the sapodilla
guar_gum
a gum from seeds of the guar plant; used to thicken foods and as sizing for paper and cloth
guar_gum: a gum from seeds of the guar plant; used to thicken foods and as sizing for paper and cloth
gum_arabic
gum from an acacia tree; used as a thickener (especially in candies and pharmaceuticals)
gum_arabic: gum from an acacia tree; used as a thickener (especially in candies and pharmaceuticals)
Senegal_gum
gum arabic from the vicinity of the Senegal river
Senegal_gum: gum arabic from the vicinity of the Senegal river
gum_butea
dried juice of the dhak tree; used as an astringent
gum_butea: dried juice of the dhak tree; used as an astringent
kino
a gum obtained from various tropical plants; used as an astringent and in tanning
kino: a gum obtained from various tropical plants; used as an astringent and in tanning
mesquite_gum
a gum obtained from mesquite pods; resembles gum arabic
mesquite_gum: a gum obtained from mesquite pods; resembles gum arabic
mucilage
a gelatinous substance secreted by plants
mucilage: a gelatinous substance secreted by plants
sterculia_gum
exudate of an Asian tree; used for finishing textiles and to thicken foodstuffs and cosmetics
sterculia_gum: exudate of an Asian tree; used for finishing textiles and to thicken foodstuffs and cosmetics
synthetic
a compound made artificially by chemical reactions
synthetic: a compound made artificially by chemical reactions
synthetic_resin
a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics
synthetic_resin: a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics
alkyd
a durable synthetic resin widely used in adhesives and paints
alkyd: a durable synthetic resin widely used in adhesives and paints
phenolic_resin
a thermosetting resin
phenolic_resin: a thermosetting resin
epoxy
a thermosetting resin; used chiefly in strong adhesives and coatings and laminates
epoxy: a thermosetting resin; used chiefly in strong adhesives and coatings and laminates
copolymer
a polymer consisting of two or more different monomers
copolymer: a polymer consisting of two or more different monomers
polyurethane
any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
polyurethane: any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
polyfoam
a foam made by adding water to polyurethane plastics
polyfoam: a foam made by adding water to polyurethane plastics
cinnamon_stone
a garnet ranging in color from yellow to brown
cinnamon_stone: a garnet ranging in color from yellow to brown
gumbo
any of various fine-grained silty soils that become waxy and very sticky mud when saturated with water
gumbo: any of various fine-grained silty soils that become waxy and very sticky mud when saturated with water
gutta-percha
a whitish rubber derived from the coagulated milky latex of gutta-percha trees; used for insulation of electrical cables
gutta-percha: a whitish rubber derived from the coagulated milky latex of gutta-percha trees; used for insulation of electrical cables
terra_alba
finely pulverized gypsum used especially as a pigment
terra_alba: finely pulverized gypsum used especially as a pigment
gummite
a gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblende
gummite: a gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblende
halibut-liver_oil
a fatty oil from halibut livers that is used as a source of vitamin A
halibut-liver_oil: a fatty oil from halibut livers that is used as a source of vitamin A
halide
a salt of any halogen acid
halide: a salt of any halogen acid
halocarbon
one of various compounds of carbon and any of the halogens
halocarbon: one of various compounds of carbon and any of the halogens
halogen
any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
halogen: any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
hanging_chad
a chad that is incompletely removed and hanging by one corner
hanging_chad: a chad that is incompletely removed and hanging by one corner
hard_lead
unrefined lead that is hard because of the impurities it contains
hard_lead: unrefined lead that is hard because of the impurities it contains
hard_lead
a lead alloy that contains about 5% antimony
hard_lead: a lead alloy that contains about 5% antimony
hard_steel
steel with more than 0.3% carbon
hard_steel: steel with more than 0.3% carbon
hard_water
water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
hard_water: water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
harlequin_opal
a reddish opal with small patches of brilliant color
harlequin_opal: a reddish opal with small patches of brilliant color
hematite
the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form
hematite: the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form
hemiacetal
an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones
hemiacetal: an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones
hemlock
poisonous drug derived from an Eurasian plant of the genus Conium
hemlock: poisonous drug derived from an Eurasian plant of the genus Conium
hemolysin
any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin
hemolysin: any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin
hemp
a plant fiber
hemp: a plant fiber
heptane
a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings
heptane: a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings
herbicide
a chemical agent that destroys plants or inhibits their growth
herbicide: a chemical agent that destroys plants or inhibits their growth
hexane
a colorless flammable liquid alkane derived from petroleum and used as a solvent
hexane: a colorless flammable liquid alkane derived from petroleum and used as a solvent
high_brass
brass with 35% zinc
high_brass: brass with 35% zinc
high-density_lipoprotein
a lipoprotein that transports cholesterol in the blood; composed of a high proportion of protein and relatively little cholesterol; high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis
high-density_lipoprotein: a lipoprotein that transports cholesterol in the blood; composed of a high proportion of protein and relatively little cholesterol; high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis
high-level_radioactive_waste
radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed
high-level_radioactive_waste: radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed
high-speed_steel
an alloy steel that remains hard at a red heat; used to make metal-cutting tools
high-speed_steel: an alloy steel that remains hard at a red heat; used to make metal-cutting tools
hip_tile
a tile shaped so as to cover the hip of a hip roof
hip_tile: a tile shaped so as to cover the hip of a hip roof
histidine
an essential amino acid found in proteins that is important for the growth and repair of tissue
histidine: an essential amino acid found in proteins that is important for the growth and repair of tissue
histaminase
enzyme that acts as a catalyst in converting histidine to histamine
histaminase: enzyme that acts as a catalyst in converting histidine to histamine
homogenate
material that has been homogenized (especially tissue that has been ground and mixed)
homogenate: material that has been homogenized (especially tissue that has been ground and mixed)
horsehair
hair taken from the mane or tail of a horse
horsehair: hair taken from the mane or tail of a horse
humectant
any substance that is added to another substance to keep it moist
humectant: any substance that is added to another substance to keep it moist
humus
partially decomposed organic matter; the organic component of soil
humus: partially decomposed organic matter; the organic component of soil
humate
material that is high in humic acids
humate: material that is high in humic acids
humic_acid
a dark brown humic substance that is soluble in water only at pH values greater than 2
humic_acid: a dark brown humic substance that is soluble in water only at pH values greater than 2
humic_substance
an organic residue of decaying organic matter
humic_substance: an organic residue of decaying organic matter
humin
a black humic substance that is not soluble in water
humin: a black humic substance that is not soluble in water
hyacinth
a red transparent variety of zircon used as a gemstone
hyacinth: a red transparent variety of zircon used as a gemstone
hyaline
a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions
hyaline: a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions
hyaluronic_acid
a viscous mucopolysaccharide found in the connective tissue space and the synovial fluid of movable joints and the humors of the eye; a cementing and protective substance
hyaluronic_acid: a viscous mucopolysaccharide found in the connective tissue space and the synovial fluid of movable joints and the humors of the eye; a cementing and protective substance
hyaluronidase
an enzyme (trade name Hyazyme) that splits hyaluronic acid and so lowers its viscosity and increases the permeability of connective tissue and the absorption of fluids
hyaluronidase: an enzyme (trade name Hyazyme) that splits hyaluronic acid and so lowers its viscosity and increases the permeability of connective tissue and the absorption of fluids