habit family hierarchy /6/Psychology/Behavior/Kinds/Habit/habit family hierarchy
habitat /4/Ecology/Ecosystem/habitat
habituation /4/Zoology/Organ/Nerve/Neuron/Physiology/habituation
hadron /5/Physics/Matter/Particle/Subatomic/hadron
hafiz /6/Religion/Religions/Islam/People/hafiz
hafting /6/History/History/Invention/Europe/hafting
haiku /2/Literature/Poetry/Kinds/Japanese/haiku
hail /5/Earth Science/Atmosphere/Precipitation/hail as ice
hair dryer /7/Machine/Kinds/Electromechanical/Fan/hair dryer
hair follicle /4/Zoology/Organ/Skin/Hair/hair follicle
hajj /6/Religion/Religions/Islam/Holidays/hajj
half-life, radioactivity /5/Physics/Matter/Atom/Nucleus/Radioactivity/half-life
half-reaction /5/Chemistry/Inorganic/Oxidation-Reduction/Cell/half-reaction
halitosis /4/Medicine/Disease/Kinds/Organ/Respiration/halitosis
hallucinogen /4/Medicine/Drug/Kinds/Hallucinogen/hallucinogen
halogen /5/Physics/Matter/Atom/Periodic Table/Columns/halogen
halting problem /3/Computer Science/Systems/Complexity Theory/halting problem
halyard /7/Machine/Parts/halyard
hammer bone /1/Consciousness/Sense/Hearing/Anatomy/Ear/Middle Ear/Bones/hammer bone
hamstring /4/Zoology/Organ/Muscle/Muscles/hamstring
handball /7/Game/Athletic/Ball/handball
hangnail /4/Medicine/Disease/Kinds/Organ/Skin/hangnail
haploid /4/Genetics/Genome/Ploidy/haploid
haplotype /4/Genetics/Allele/haplotype
happiness /6/Psychology/Cognition/Emotion/Kinds/happiness
haram /6/Religion/Religions/Islam/haram
hard palate /4/Zoology/Organ/Digestion/Parts/Mouth/Pharynx/hard palate
hard sell /6/Economics/Microeconomics/Business/Department/Sales/Practices/hard sell
hard water /5/Chemistry/Inorganic/Chemical/Molecule/Water/Type/hard water
hardness /5/Earth Science/Mineral/Properties/Hardness/hardness of rock
hardwood /4/Botany/Plant/Vascular/Parts/Tree/hardwood
harmonic mean /3/Calculus/Series/Mean/harmonic mean
harmonic wave, physics /5/Physics/Wave/Superposition/Resonance/harmonic wave
harrow /7/Machine/Kinds/Mechanical/harrow
hatching /7/Machine/Kinds/Mechanical/hatching
hatchling /4/Zoology/Kinds/Bird/Age/hatchling
haunch /4/Zoology/Organ/Skeleton/Body/haunch
hay /4/Botany/Plant/Kinds/Crop/Forage/hay
hay fever /4/Medicine/Disease/Kinds/Organ/Immune/Allergy/hay fever
headache /4/Medicine/Disease/Kinds/Organ/Nerve/Pain/Headache/headache
headland /5/Earth Science/Land/Land Forms/Shore/headland
headwaters /5/Earth Science/Water/Fresh/Areas/River/headwaters
heart /4/Zoology/Organ/Circulation/Parts/Heart/heart organ
heart attack /4/Medicine/Disease/Kinds/Organ/Circulation/Muscle/heart attack
heartwood /4/Botany/Plant/Vascular/Parts/Stem/Woody/Xylem/heartwood
heat capacity /5/Physics/Heat/Energy/Heat Capacity/heat capacity
heat energy conservation /5/Physics/Heat/Energy/heat energy conservation
heat exhaustion, disease /4/Medicine/Disease/Kinds/heat exhaustion
heat of reaction /5/Chemistry/Inorganic/Chemical Reaction/Kinds/Heat/heat of reaction
heat pump /7/Machine/Kinds/Heat/Heater/heat pump
heat rash /4/Medicine/Disease/Kinds/Organ/Skin/heat rash
heat sensor /7/Machine/Kinds/Instrument/heat sensor
heat shock /4/Genetics/Recombinant DNA/Cloning/Methods/heat shock
heat sink /7/Machine/Kinds/Electronic/Parts/Sink/heat sink
heat, energy /5/Physics/Heat/heat
heath, land /5/Earth Science/Land/Land Forms/Vegetation/heath field
heating pad /7/Machine/Kinds/Heat/heating pad
hegemony /6/Political Science/International Relations/Kinds/Control/hegemony
Heimlich maneuver /7/Personal Affairs/Health/First Aid/Heimlich maneuver
helicopter /7/Machine/Transportation/Vehicle/Airplane/Kinds/helicopter
helix /3/Geometry/Solid/Cone/Conic Section/Sections/helix
hematocrit /4/Zoology/Organ/Blood/hematocrit
hematoma /4/Medicine/Disease/Kinds/Organ/Circulation/Dilation/hematoma
hematopoietic cell /4/Cell/Kinds/hematopoietic cell
hemisphere /3/Geometry/Solid/Sphere/Spherical Regions/hemisphere
hemolysis /4/Medicine/Disease/Kinds/Organ/Circulation/Blood/hemolysis
hemophilia /4/Medicine/Disease/Kinds/Genetic Disease/hemophilia
hemophiliac /4/Zoology/Organ/Blood/Clotting/hemophiliac
hemorrhage /4/Medicine/Disease/Kinds/Organ/Circulation/Bleeding/hemorrhage
hemorrhoid /4/Medicine/Disease/Kinds/Organ/Circulation/Dilation/hemorrhoid
hen /4/Zoology/Kinds/Bird/Gender/hen
hepatic portal system /4/Zoology/Organ/Circulation/Parts/Vein/hepatic portal system
hepatitis /4/Medicine/Disease/Kinds/Organism/Virus/hepatitis
hepatocyte /4/Cell/Kinds/hepatocyte
heptagon /3/Geometry/Plane/Polygon/Kinds/Number/heptagon
herb, stem /4/Botany/Plant/Vascular/Parts/Stem/Herbaceous/herb and stem
herbicide /4/Medicine/Drug/Classes/herbicide
herbivore /4/Ecology/Community/Food Chain/Organism Types/herbivore
hermaphrodite /4/Zoology/Kinds/Annelid/Reproduction/hermaphrodite
hermaphroditism /4/Biology/Evolution/Reproduction/Sexual/Kinds/hermaphroditism
hermeneutics /6/Linguistics/Semantics/Kinds/hermeneutics
hernia /4/Medicine/Disease/Kinds/Organ/Reproduction/hernia
herpes /4/Medicine/Disease/Kinds/Organism/Virus/herpes
heterodyne /7/Machine/Kinds/Electronic/Effects/Multiplexing/heterodyne
heterodyning /5/Physics/Wave/Superposition/heterodyning
heterogamy /4/Botany/Fungus/Reproduction/heterogamy
heteronym /6/Linguistics/Semantics/Word/Relations/heteronym
heterozygous alleles /4/Genetics/Allele/Segregation/heterozygous alleles
heuristic reasoning, logic /3/Logic/Reasoning/heuristic reasoning
heuristic search /3/Computer Science/Software/Algorithm/Kinds/Search/heuristic search
heuristics /6/Philosophy/Epistemology/Methods/heuristics
hexagon /3/Geometry/Plane/Polygon/Kinds/Number/hexagon
hibernation /4/Zoology/Kinds/Mammal/Rhythm/Season/hibernation
hidden particle /5/Physics/Quantum Mechanics/Theory/Hidden/hidden particle
hidden variable /5/Physics/Quantum Mechanics/Theory/Hidden/hidden variable
hieroglyph, picture /6/Linguistics/Writing/Alphabet/Units/hieroglyph
high fidelity /7/Machine/Kinds/Electronic/Effects/high fidelity
high school /6/Education/Levels/high school
high-density lipoprotein /5/Chemistry/Biochemistry/Lipid/Kinds/Lipoprotein/high-density lipoprotein
highland climate /5/Earth Science/Planet/Climate/Kinds/highland climate
highland fling /2/Dance/Kinds/Europe/highland fling
hill climbing /3/Computer Science/Software/Algorithm/Kinds/Search/hill climbing
hillock /5/Earth Science/Land/Land Forms/High Area/hillock
hindbrain /4/Zoology/Organ/Nerve/Brain/Divisions/hindbrain
hindquarter /4/Zoology/Organ/Skeleton/Body/Trunk/hindquarter
hinge /7/Machine/Kinds/Mechanical/Rotation/hinge
hippocampus /4/Zoology/Organ/Nerve/Brain/Cerebrum/Frontal Lobe/Hippocampus/hippocampus
Hippocratic oath /4/Medicine/Hippocratic oath
hiring /6/Education/Job/hiring
histogram /3/Statistics/Graph/histogram
histology /4/Biology/Subjects/Medicine/histology
histone /4/Genetics/DNA Regulation/Protein/histone
hives /4/Medicine/Disease/Kinds/Organ/Immune/Allergy/hives
hoarfrost /5/Earth Science/Atmosphere/Inversion Layer/Condensation/hoarfrost
hoedown /2/Dance/Kinds/USA/hoedown
hogan /6/History/History/Invention/America/hogan
holding company /6/Economics/Microeconomics/Business/Kinds/Corporation/Kinds/holding company
hold-on relay /3/Computer Science/Hardware/Circuit/hold-on relay
hole /5/Physics/Electromagnetism/Conductivity/Semiconductor/hole in semiconductor
holism /6/Philosophy/Epistemology/Theory/Atoms/holism
hologram /5/Physics/Wave/Electromagnetic/Coherence/hologram
holographic will /7/Legal Affairs/Death/Will/Kinds/holographic will
holy /6/Religion/Things/holy
home economics /6/Economics/home economics
home office /6/Economics/Microeconomics/Business/Kinds/home office
home rule /6/Political Science/International Relations/Kinds/home rule
homeomorphism /3/Topology/homeomorphism
homeopathy /6/Sociology/Subjects/Anthropology/Magic/homeopathy
homeostasis, metabolism /4/Cell/Metabolism/homeostasis in metabolism
homeowner's insurance /7/Financial Affairs/Insurance/homeowner's insurance
homework /6/Education/Classroom/homework
homicide /6/Law/Crime/Crimes/Violent/Murder/homicide
homily /2/Literature/Prose/Kinds/Essay/homily
hominin /4/Zoology/Kinds/Hominin/hominin
homogeneous equation /3/Algebra/Equation/Kinds/homogeneous equation
homoiotherm /4/Zoology/Kinds/Bird/homoiotherm
homologous chromosomes /4/Genetics/Chromosome/homologous chromosomes
homologue /6/Linguistics/Semantics/Factors/homologue in semantics
homology, DNA /4/Genetics/Recombinant DNA/DNA Sequencing/homology in DNA sequence
homology, organism /4/Biology/Evolution/Species/homology of organisms
homomorphy /4/Zoology/Form/homomorphy
homonym /6/Linguistics/Semantics/Word/Relations/homonym
homotopy, topology /3/Topology/Surface/Genus/homotopy
homozygous alleles /4/Genetics/Allele/Segregation/homozygous alleles
honky-tonk /2/Music/Jazz/honky-tonk
honorarium /6/Economics/Microeconomics/Production/Factors/Labor/Job/Money/honorarium
hood /5/Chemistry/Analytical Chemistry/Laboratory Equipment/hood
hoof-and-mouth disease /4/Medicine/Disease/Kinds/Organism/Virus/hoof-and-mouth disease
hookah /7/Machine/Kinds/Fluid/Air/hookah
hookworm, disease /4/Medicine/Disease/Kinds/Organism/Worm/hookworm disease
hora, dance /2/Dance/Kinds/hora dance
hornpipe, dance /2/Dance/Kinds/Europe/hornpipe
horology /7/Machine/Engineering/horology
horror, emotion /6/Psychology/Cognition/Emotion/Kinds/horror as emotion
horse latitudes /5/Earth Science/Atmosphere/Wind/Kinds/horse latitudes
horse racing /7/Game/Athletic/Riding/horse racing
horseshoes /7/Game/Recreational/horseshoes
horsetail /4/Botany/Plant/Vascular/Sporophyte/horsetail
horst /5/Earth Science/Planet/Plate Tectonics/Mountain Building/horst
horticulture /4/Biology/Subjects/Agriculture/horticulture
hot flash /4/Medicine/Disease/Kinds/Organ/Reproduction/hot flash
hot spot, mantle /5/Earth Science/Planet/Plate Tectonics/Mountain Building/hot spot
hourglass, clock /7/Machine/Kinds/Instrument/Clock/hourglass clock
houri /6/Religion/Religions/Islam/People/houri
house arrest /6/Law/Police/house arrest
housebreaking /6/Law/Crime/Crimes/Theft/housebreaking
hovering /4/Zoology/Kinds/Arthropod/Insect/Flying/hovering
Hubble constant /5/Astronomy/Galaxy/Hubble constant
hula /2/Dance/Kinds/hula
human immunodeficiency virus /4/Medicine/Disease/Kinds/Organism/Virus/human immunodeficiency disease
human resources /6/Economics/Microeconomics/Business/Department/human resources
humectant /4/Medicine/Drug/Kinds/Tissue/Skin/Moistener/humectant
humerus /4/Zoology/Organ/Skeleton/Bones/Extremity/Arm/humerus
humidity /5/Earth Science/Atmosphere/Water/humidity
hummock /5/Earth Science/Land/Land Forms/High Area/hummock
humoral immunity /4/Zoology/Organ/Immune System/Immunity Types/humoral immunity
humus /5/Earth Science/Land/Soil/Kinds/humus
hung jury /6/Law/Trial/Jury/hung jury
hunger /4/Nutrition/hunger in nutrition
hunter-gatherer /6/Sociology/Society/Kinds/hunter-gatherer society
hunting /7/Game/Athletic/hunting
hurling /7/Game/Athletic/Ball/hurling
hurricane /5/Earth Science/Atmosphere/Wind/Kinds/Storm/hurricane
hurricane lamp /7/Machine/Kinds/Illumination/Lighting/Lamp/hurricane lamp
hybrid /4/Biology/Evolution/Variation/hybrid strain
hybrid technology multithreaded /7/Machine/Kinds/Electronic/Calculator/hybrid technology multithreaded
hybridization, bonding /5/Chemistry/Inorganic/Chemical Bond/hybridization of bonds
hybridization, DNA /4/Genetics/Recombinant DNA/Amplification/hybridization of DNA
hydra /4/Zoology/Kinds/Coelenterate/Hydra/hydra coelenterate
hydrate /5/Chemistry/Inorganic/Chemical/Molecule/Water/hydrate
hydration energy /5/Chemistry/Inorganic/Phase/Solution/Solubility/hydration energy
hydraulics /5/Physics/Dynamics/Fluid/Pressure/hydraulics
hydride /7/Machine/Industrial Materials/hydride
hydrocarbon /5/Chemistry/Organic/Chemical/hydrocarbon
hydrodynamics /5/Physics/Dynamics/Fluid/Pressure/hydrodynamics
hydrogen bond /5/Chemistry/Inorganic/Chemical Bond/Kinds/hydrogen bond
hydrogen clock /7/Machine/Kinds/Instrument/Clock/hydrogen clock
hydrolysis /5/Chemistry/Inorganic/Acid-Base/hydrolysis
hydrometer /5/Physics/Dynamics/Fluid/Density/hydrometer
hydroponics /4/Biology/Subjects/Agriculture/hydroponics
hydrostatics /7/Machine/Engineering/hydrostatics
hydrothermal vent /4/Biology/Life/Origin/Planet/hydrothermal vent
hygrometer /5/Earth Science/Atmosphere/Water/hygrometer
hygroscopic /5/Chemistry/Inorganic/Chemical/Molecule/Water/hygroscopic
hymen /4/Zoology/Organ/Reproduction/Female/Parts/hymen
hyoscine sleep /1/Consciousness/Sense/Pain/Physiology/Pain Relief/hyoscine sleep
hyperaesthesia, touch /1/Consciousness/Sense/Touch/hyperaesthesia touch
hyperbola, conic /3/Geometry/Solid/Cone/Conic Section/Sections/hyperbola
hyperbole /2/Literature/Rhetoric/Hyperbole/hyperbole
hyperbolic geometry /3/Geometry/Kinds/Projective Geometry/Kinds/hyperbolic geometry
hyperglycemia /4/Medicine/Disease/Kinds/Organ/Endocrine/Glucose/hyperglycemia
hyperkinesis /4/Medicine/Disease/Kinds/Organ/Nerve/Muscle/hyperkinesis
hyperparathyroidism /4/Medicine/Disease/Kinds/Organ/Endocrine/hyperparathyroidism
hypertension /4/Medicine/Disease/Kinds/Organ/Circulation/Blood/hypertension
hyperthyroidism /4/Medicine/Disease/Kinds/Organ/Endocrine/Thyroid/hyperthyroidism
hypertrophy /4/Medicine/Disease/Kinds/Organ/Muscle/hypertrophy
hyphae /4/Botany/Fungus/hyphae
hyphen /6/Linguistics/Writing/Symbol/Punctuation/hyphen
hypochondria /4/Medicine/Disease/Kinds/Organ/Nerve/Mental/Neurosis/hypochondria
hypocretin /4/Zoology/Organ/Endocrine Gland/Hormone/Appetite/hypocretin
hypodermic /4/Medicine/Medical Treatments/Injection/hypodermic
hypoglycemia /4/Medicine/Disease/Kinds/Organ/Endocrine/Glucose/hypoglycemia
hypophysis /4/Zoology/Organ/Endocrine Gland/Glands/hypophysis
hypotenuse, triangle /3/Geometry/Plane/Polygon/Kinds/Triangle/Line/hypotenuse
hypothalamus, brain /4/Zoology/Organ/Nerve/Brain/Cerebrum/Diencephalon/Hypothalamus/hypothalamus in brain
hypothesize and match /3/Computer Science/Software/Algorithm/Kinds/Search/hypothesize and match algorithm
hypothyroidism /4/Medicine/Disease/Kinds/Organ/Endocrine/Thyroid/hypothyroidism
hypotrophy /4/Medicine/Disease/Kinds/Organ/Muscle/hypotrophy
hypoxia /4/Medicine/Disease/Kinds/Organ/Respiration/hypoxia
hysterectomy /4/Medicine/Disease/Kinds/Organ/Reproduction/hysterectomy
hysteresis, magnetism /5/Physics/Electromagnetism/Magnetism/Permeability/hysteresis
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Created: 2022.0223