eardrum /1/Consciousness/Sense/Hearing/Anatomy/Ear/Outer Ear/eardrum
earphone, speaker /7/Machine/Kinds/Electronic/Sound/earphone
earthquake /5/Earth Science/Planet/Plate Tectonics/Earthquake/earthquake
earwax /1/Consciousness/Sense/Hearing/Anatomy/Ear/Outer Ear/earwax
easement, law /6/Law/Property/easement property
easement, state /6/Law/National/International Law/Easement/easement by state
ecclesia, religion /6/Law/National/Canon Law/ecclesia
echo /5/Physics/Wave/Sound/Echo/echo of sound
echoic memory /6/Psychology/Cognition/Memory/Kinds/echoic memory
echolocation /5/Physics/Wave/Sound/Echo/echolocation
ecliptic /5/Astronomy/Solar System/Orbit/ecliptic
ecological niche /4/Ecology/Ecosystem/ecological niche
ecology /4/Ecology/ecology
econometrics /6/Economics/Macroeconomics/Measurement/econometrics
economic cycle /6/Economics/Macroeconomics/Economic Cycle/economic cycle
economic indicator /6/Economics/Macroeconomics/Measurement/Economic Indicators/economic indicator
economics /6/Economics/economics
economies of scale, finance /6/Economics/Microeconomics/Finance/Scale/economies of scale
economy /6/Economics/Macroeconomics/Economy/economy
ecosystem /4/Ecology/Ecosystem/ecosystem
ectoderm /4/Zoology/Development/Germ Layer/ectoderm
eczema /4/Medicine/Disease/Kinds/Organism/Fungus/eczema
eddy /5/Earth Science/Water/Fresh/Areas/River/eddy
edema /4/Medicine/Disease/Kinds/Organ/Tissue Water/edema
edict, Roman /6/Law/National/Roman Law/Roman Republic/Laws/edict Roman
educational testing /6/Education/Testing/educational testing
efficacy, treatment effectiveness /4/Medicine/Medical Treatments/Medical Testing/efficacy
efficient cause /6/Philosophy/Epistemology/Causation/Kinds/efficient cause
efflorescence, water /5/Chemistry/Inorganic/Chemical/Molecule/Water/efflorescence of water
effusion /5/Chemistry/Inorganic/Phase/effusion
egoism /6/Psychology/Personality/egoism
egotism /6/Psychology/Personality/egotism
eidetic imagery /6/Psychology/Cognition/Memory/Kinds/eidetic imagery
eigenfunction /3/Calculus/Differential Equation/Kinds/Partial/eigenfunction
either-or fallacy /3/Logic/Fallacy/Ambiguity/either-or fallacy
El Niño /5/Earth Science/Water/Ocean/El Nino
elastic collision /5/Physics/Dynamics/Collision/elastic collision
elastic limit /5/Physics/Dynamics/Pressure/Elasticity/elastic limit
elasticity, economics /6/Economics/Microeconomics/Supply And Demand/elasticity of price
elasticity, material /5/Chemistry/Inorganic/Chemical/Properties/elasticity
elasticity, physics /5/Physics/Dynamics/Pressure/Elasticity/elasticity of material
elbow /4/Zoology/Organ/Skeleton/Bones/Extremity/Arm/elbow
electoral college /6/Political Science/Government/Branch/Legislative/electoral college
electric blanket /7/Machine/Kinds/Electric/Heat/electric blanket
electric energy /5/Physics/Electromagnetism/Energy/electric energy
electric eye /7/Machine/Kinds/Electronic/Light/Ray/electric eye
electric field /5/Physics/Electromagnetism/Energy/electric field
electric heat /7/Machine/Kinds/Electric/Heat/electric heat
electric motor /5/Physics/Electromagnetism/Magnetism/Machine/Motor/electric motor
electric oven /7/Machine/Kinds/Electric/Heat/Oven/electric oven
electric power /5/Physics/Electromagnetism/Energy/electric power
electric razor /7/Machine/Kinds/Electromechanical/electric razor
electric wave /5/Physics/Wave/Electromagnetic/Frequency/Radiation Types/Spectrum/electric wave
electroactive polymer /7/Machine/Industrial Materials/Organic Chemical/Polymer/electroactive polymer
electrocardiogram /4/Medicine/Medical Examination/Tests/Circulatory/electrocardiogram
electrode /5/Chemistry/Analytical Chemistry/Electricity/Electrode/electrode
electroencephalography /4/Zoology/Organ/Nerve/Brain/Electrical Activity/electroencephalography
electroluminescence /5/Physics/Electromagnetism/Conductivity/Semiconductor/electroluminescence
electrolysis /5/Chemistry/Inorganic/Oxidation-Reduction/Electrolysis/electrolysis
electrolyte /5/Chemistry/Inorganic/Phase/Solution/Electric/electrolyte
electrolytic cell /5/Chemistry/Inorganic/Oxidation-Reduction/Cell/Type/electrolytic cell
electromagnet /5/Physics/Electromagnetism/Magnetism/Kinds/electromagnet
electromagnetic induction /5/Physics/Electromagnetism/Magnetism/Induction/electromagnetic induction
electromagnetic wave induction /5/Physics/Wave/Electromagnetic/electromagnetic wave induction
electromagnetism /5/Physics/Electromagnetism/electromagnetism
electromotive force /5/Chemistry/Inorganic/Oxidation-Reduction/Cell/Forces/electromotive force
electron /5/Physics/Matter/Particle/Subatomic/Fermion/Lepton/electron particle
electron configuration /5/Physics/Matter/Atom/Orbital/electron configuration
electron microscope /7/Machine/Kinds/Optical/Magnify/electron microscope
electron orbit /5/Physics/Matter/Atom/Orbital/electron orbit
electron sink /3/Computer Science/Hardware/Circuit/electron sink
electron source /3/Computer Science/Hardware/Circuit/electron source
electron transition /5/Physics/Matter/Atom/Wavelength Change/Transition/electron transition
electronics /7/Machine/Engineering/electronics
electrophile /5/Chemistry/Organic/electrophile
electrophoresis /5/Chemistry/Analytical Chemistry/Electricity/electrophoresis
electroplating /5/Chemistry/Inorganic/Oxidation-Reduction/Cell/Type/electroplating
electroreception /1/Consciousness/Sense/Electroreception/electroreception
electroscope /5/Physics/Electromagnetism/Charge/electroscope
electrotype /7/Machine/Industrial Materials/Metal/electrotype
electroweak force /5/Physics/Dynamics/Force/Kinds/electroweak
elegy /2/Literature/Poetry/Kinds/elegy
element /5/Chemistry/Inorganic/Chemical/Element/element
elevator, lift /7/Machine/Kinds/Electromechanical/elevator machine
ellipse, conic /3/Geometry/Solid/Cone/Conic Section/Sections/ellipse
ellipsis symbol /6/Linguistics/Writing/Symbol/Punctuation/ellipsis symbol
ellipsoid /3/Geometry/Solid/Ellipsoid/ellipsoid
elocution /2/Literature/Prose/Expressions/Speaking Methods/elocution
emancipation /6/Psychology/Family/Children/emancipation
embargo /6/Economics/Macroeconomics/International Trade/Restrictions/embargo
embassy /6/Political Science/International Relations/Offices/embassy
embezzlement /6/Law/Crime/Crimes/White Collar/embezzlement
embolism /4/Medicine/Disease/Kinds/Organ/Circulation/Dilation/embolism
embolus /4/Medicine/Disease/Kinds/Organ/Circulation/Blood/embolus
embouchure /2/Music/Instrument/embouchure
embryo, animal /4/Zoology/Development/Stages/Gestation/Embryo 014 Day/embryo of animal
embryology /4/Biology/Subjects/Animal/embryology
embryonic stem cell, gestation /4/Zoology/Development/Stages/Gestation/Embryo 007 Day/embryonic stem cell
emerald /5/Earth Science/Mineral/Kinds/Silicates/Cyclosilicate/Beryl/emerald
emergence /6/Philosophy/Metaphysics/Theories/emergence and existence
emergent property /6/Philosophy/Epistemology/Object Properties/emergent property
emetic /4/Medicine/Drug/Kinds/Tissue/GI Tract/emetic
émigré /6/Political Science/International Relations/People/emigre
eminence /5/Earth Science/Land/Land Forms/High Area/eminence as hill
eminent domain /6/Law/Property/eminent domain
emission spectra /5/Physics/Matter/Atom/Wavelength Change/Spectra/emission spectra
emollient /4/Medicine/Drug/Kinds/Tissue/Skin/Soother/emollient
emotion /6/Psychology/Cognition/Emotion/emotion
emphysema /4/Medicine/Disease/Kinds/Organ/Respiration/emphysema
empiricism, epistemology /6/Philosophy/Epistemology/Reference Source/empiricism in epistemology
employment /6/Economics/Macroeconomics/Economy/Employment/employment
employment agency /6/Education/Job/Employment Agency/employment agency
emulsification /5/Chemistry/Biochemistry/Lipid/Chemical Reaction/emulsification
emulsion, mixture /5/Chemistry/Inorganic/Phase/Mixture/emulsion of fluid
enantiomer /5/Chemistry/Organic/Bond Orientation/Isomer/Stereo/Enantiomer/enantiomer
encaustic /2/Art/Painting/Materials/encaustic
encephalitis /4/Medicine/Disease/Kinds/Organ/Nerve/Infection/encephalitis
encyclical /2/Literature/Prose/Kinds/Letter/encyclical
encyclopedia /2/Literature/Prose/Kinds/Book/Nonfiction/encyclopedia
endocrine gland /4/Zoology/Organ/Endocrine Gland/endocrine gland
endocrine system /4/Zoology/Organ System/endocrine system
endocrinology /4/Biology/Subjects/Medicine/endocrinology
endoderm /4/Zoology/Development/Germ Layer/endoderm
endoplasmic reticulum /4/Cell/Organelle/Microsome/endoplasmic reticulum
endorphin /4/Zoology/Organ/Endocrine Gland/Hormone/Nerve/Opioid/endorphin
endorsement /7/Financial Affairs/Banking/Checking/endorsement
endoscopy /4/Medicine/Medical Examination/Tests/endoscopy
endothelia /4/Cell/Kinds/endothelia
endotherm /4/Zoology/Kinds/Reptile/Temperature/endotherm
endowment /6/Economics/Microeconomics/Philanthropy/endowment
enema /4/Medicine/Drug/Kinds/Tissue/GI Tract/enema
energy /5/Physics/Dynamics/Energy/energy
energy conservation, dynamics /5/Physics/Dynamics/Conservation/energy conservation
engineering /7/Machine/Engineering/engineering
engram /6/Psychology/Cognition/Memory/Processes/engram
enjoin /6/Law/Trial/Decision/enjoin
enkephalin /4/Zoology/Organ/Endocrine Gland/Hormone/Nerve/Opioid/enkephalin
ensemble, system /5/Physics/Heat/Statistical Mechanics/ensemble in statistics
entablature /2/Art/Architecture/Building Parts/Greek Temple/entablature
entactogen /4/Medicine/Drug/Classes/entactogen
entanglement /5/Physics/Quantum Mechanics/Waves/Entanglement/entanglement
enteric /4/Zoology/Organ/Digestion/enteric as intestinal
enteritis /4/Medicine/Disease/Kinds/Organ/Abdomen/enteritis
enthalpy /5/Physics/Heat/Energy/enthalpy
entomology /4/Biology/Subjects/Animal/entomology
entrainment /5/Physics/Wave/Entrainment/entrainment
entrepreneur /6/Economics/Microeconomics/Business/entrepreneur
entropy, heat /5/Physics/Heat/Entropy/entropy and heat
enunciation, clarity /6/Linguistics/Phonetics/Speaking/enunciation clarity
envelope, curve /3/Geometry/Plane/Curve/Kinds/Envelope/envelope
enzymatic reaction /5/Chemistry/Biochemistry/Protein/Chemical Reaction/enzymatic reaction
enzyme /5/Chemistry/Biochemistry/Protein/Kinds/Enzyme/enzyme
enzymology /4/Biology/Subjects/Cell Biology/enzymology
epic question /2/Literature/Poetry/Kinds/Epic Poem/epic question
epidemiology /4/Biology/Subjects/Medicine/epidemiology
epidermal growth factor /4/Zoology/Organ/Endocrine Gland/Hormone/Nerve/epidermal growth factor
epidermis, skin /4/Zoology/Organ/Skin/Layers/epidermis of skin
epigenesis /4/Zoology/Development/Processes/Genesis/epigenesis
epigenetics /4/Genetics/epigenetics
epiglottis /4/Zoology/Organ/Respiration/Parts/Throat/epiglottis
epigram /2/Literature/Poetry/Kinds/epigram
epigraph /2/Literature/Book Parts/epigraph
epilepsy /4/Medicine/Disease/Kinds/Organ/Nerve/Epilepsy/epilepsy
epilogue /2/Literature/Book Parts/epilogue
epinephrine /4/Zoology/Organ/Endocrine Gland/Hormone/Nerve/Adrenalin/epinephrine
epiphany /2/Literature/Literary Techniques/epiphany literature
epiphyte, air plant /4/Botany/Plant/Substrate/epiphyte
epistemology /6/Philosophy/Epistemology/epistemology general
epistle /2/Literature/Prose/Kinds/Letter/epistle
epitaph /2/Literature/Prose/Expressions/Sayings/epitaph
epithelial tissue /4/Zoology/Tissue/Epithelial/epithelial tissue
epithet /2/Literature/Prose/Expressions/Serious/epithet
epitope /5/Chemistry/Biochemistry/Protein/Kinds/Immunity/epitope
eponym /6/Linguistics/Semantics/Word/Relations/eponym
epoxy glue /7/Machine/Tool/Fastening/Fastener/Glue/epoxy glue
Epsom salt /5/Earth Science/Mineral/Kinds/Magnesium/Epsom salt
equator /5/Earth Science/Planet/Earth Coordinates/Latitude/equator
equilibrium constant /5/Chemistry/Inorganic/Chemical Reaction/Equation/equilibrium constant
equilibrium, physics /5/Physics/Dynamics/Resultant/equilibrium of forces
equilibrium, reaction /5/Chemistry/Inorganic/Chemical Reaction/Equation/equilibrium of reaction
equipartition, statistical mechanics /5/Physics/Heat/Statistical Mechanics/equipartition
equipollence, negation /3/Logic/Statements/Permutations/equipollence
equitation /7/Game/Athletic/Riding/equitation
equity capital /6/Economics/Microeconomics/Money/equity as value
equity, house /7/Legal Affairs/Property/Housing/Buying/Mortgage/equity in house
equity, law /6/Law/Change/equity as justice
equivalence principle /5/Physics/Relativity/General Relativity/Principles/equivalence principle
equivalent, chemistry /5/Chemistry/Inorganic/Oxidation-Reduction/Electrolysis/equivalent
ergodic hypothesis /5/Physics/Heat/Statistical Mechanics/ergodic hypothesis
ergodic process /3/Computer Science/System Analysis/States/Trajectory/ergodic process
ergonomics /6/Psychology/Behavior/Theories/ergonomics
erosion /5/Earth Science/Land/Erosion/erosion
error, experiment /6/Psychology/Techniques/Validity/error
escalator /7/Machine/Kinds/Electromechanical/escalator
escape velocity /5/Physics/Kinetics/escape velocity
escapement /7/Machine/Kinds/Instrument/Clock/escapement
escarpment /5/Earth Science/Land/Land Forms/High Area/escarpment
eschatology /6/Religion/Unity of Explanation/eschatology
escheat /7/Legal Affairs/Death/Will/escheat
escrow account /7/Legal Affairs/Property/Housing/Buying/Mortgage/escrow account
escrow, will /7/Legal Affairs/Death/Will/Probate/escrow on will
esophagus /4/Zoology/Organ/Digestion/Parts/Mouth/Pharynx/esophagus
ester /5/Chemistry/Organic/Chemical/Oxygen/ester
estimation /3/Statistics/Statistical Population/Estimation/estimation
estivation /4/Zoology/Kinds/Mammal/Rhythm/Season/estivation
estrogen /4/Zoology/Organ/Endocrine Gland/Hormone/Sex/estrogen
estrus /4/Zoology/Organ/Reproduction/Female/Menstruation/estrus
estuary /5/Earth Science/Water/Ocean/Coast/estuary
ether, chemical /5/Chemistry/Organic/Chemical/Oxygen/Ether/ether as chemical
ethnocentrism /6/Sociology/Culture/ethnocentrism
ethnography /6/Sociology/Subjects/ethnography
ethology /4/Biology/Subjects/Animal/ethology
etiology, disease causes /4/Biology/Subjects/Medicine/etiology
etude /2/Music/Classical/Composition Types/etude
eucharist /6/Religion/Religions/Christianity/Events/eucharist
Euclidean geometry /3/Geometry/Kinds/Projective Geometry/Kinds/Euclidean geometry
eugenics /4/Genetics/eugenics
euglena /4/Botany/Algae/Kinds/euglena
eukaryote /4/Biology/Evolution/Classification/Cell Nucleus/eukaryote
eulogy /2/Literature/Poetry/Kinds/Funeral/eulogy
eunuch /4/Medicine/Disease/Kinds/Organ/Endocrine/eunuch
euphemism /2/Literature/Rhetoric/Irony/euphemism
euphony /2/Literature/Prose/Expressions/Speaking Methods/euphony
euphoriant, stimulant /4/Medicine/Drug/Kinds/Stimulant/Classes/euphoriant
Eustachian tube /1/Consciousness/Sense/Hearing/Anatomy/Eustachian tube
euthanasia /4/Biology/Life/euthanasia
eutrophication /4/Ecology/Pollution/Kinds/eutrophication
evaporation /5/Earth Science/Atmosphere/Water/evaporation
eviction /7/Legal Affairs/Property/Housing/Renting/eviction
evil /6/Philosophy/Ethics/Evil/evil
evolution, species /4/Biology/Evolution/evolution in biology
ex parte /6/Linguistics/Languages/Latin/ex parte
exchange rate /6/Economics/Macroeconomics/International Trade/Exchange Rate/exchange rate
exchequer /6/Economics/Macroeconomics/Government Actions/exchequer
excise tax /6/Economics/Macroeconomics/Government Actions/Tax/excise tax
exclamation point /6/Linguistics/Writing/Symbol/Punctuation/exclamation point
excluded middle, principle /3/Logic/Rules/excluded middle
excreting system /4/Zoology/Organ System/excreting system
executive branch /6/Political Science/Government/Branch/Executive/executive branch
executor /7/Legal Affairs/Death/Will/People/executor of will
exercise, activity /7/Game/Athletic/Athletics/exercise activity
exhalation /4/Zoology/Organ/Respiration/Flow/exhalation
exhibitionism /4/Zoology/Organ/Reproduction/Sex Methods/exhibitionism
exhibitionist /6/Psychology/Family/Sexual Actions/exhibitionist
expansion, matter /5/Physics/Heat/expansion by heat
expected value /3/Statistics/Statistical Population/Estimation/expected value
expectorant /4/Medicine/Drug/Classes/expectorant
expense account /6/Economics/Microeconomics/Production/Factors/Labor/Job/Benefit/expense account
expert system /3/Computer Science/Systems/Artificial Intelligence/expert system
expertise /6/Psychology/Intelligence/expertise
exploitation /6/Philosophy/Ethics/Feelings/exploitation
explosion /5/Physics/Heat/Explosion/explosion
exponential curve /3/Geometry/Plane/Curve/Kinds/exponential curve
export tax /6/Economics/Macroeconomics/Government Actions/Tax/export tax
expository lesson /6/Education/Classroom/Methods/expository lesson
exposure, risk /4/Medicine/Medical Treatments/Medical Testing/exposure
extensive quantity /5/Physics/Measurement/Quantity/extensive quantity
external combustion engine /7/Machine/Kinds/Engine/Kinds/external combustion engine
extinction, learning /6/Psychology/Cognition/Learning/Kinds/Conditioning/Forgetting/extinction of learning
extinction, species /4/Biology/Evolution/Selection/extinction of species
extortion /6/Law/Crime/Crimes/White Collar/extortion
extracellular matrix /4/Cell/extracellular matrix
extraction /5/Chemistry/Analytical Chemistry/Dissolution/extraction
extradition /6/Law/National/American Law/Constitution/extradition
extraneous solution /3/Algebra/Equation/Solution/extraneous solution
extrapolation /3/Algebra/Equation/Solution/Methods/extrapolation
extrasensory perception /6/Psychology/Parapsychology/extrasensory perception
extraterritoriality /6/Law/National/International Law/Alien/extraterritoriality
extremity /4/Zoology/Organ/Skeleton/Body/Extremity/extremity
extroversion /6/Psychology/Personality/Kinds/Version/extroversion
eye contact /6/Psychology/Behavior/Kinds/Aggression/eye contact
eye, storm /5/Earth Science/Atmosphere/Wind/eye of storm
eye-hand coordination /6/Psychology/Behavior/Kinds/eye-hand coordination
eyetooth /4/Zoology/Organ/Digestion/Parts/Teeth/Kinds/eyetooth
eyewitness testimony /6/Psychology/Cognition/Memory/Kinds/eyewitness testimony
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Created: 2022.0223