oasis /5/Earth Science/Land/Land Forms/Vegetation/oasis vegetation
obedience /6/Psychology/Behavior/Kinds/obedience
obesity /4/Medicine/Disease/Kinds/Nutrition/obesity
objective lens /7/Machine/Kinds/Optical/Lens/objective lens
obsession /4/Medicine/Disease/Kinds/Organ/Nerve/Mental/Neurosis/Obsession/obsession
obsessive-compulsive reaction /4/Medicine/Disease/Kinds/Organ/Nerve/Mental/Neurosis/Obsession/obsessive-compulsive
obstetrics /4/Biology/Subjects/Medicine/obstetrics
obtuse angle /3/Geometry/Plane/Angle/Kinds/obtuse angle
obverse /3/Logic/Statements/Permutations/obverse
occipital lobe /4/Zoology/Organ/Nerve/Brain/Cerebrum/Occipital Lobe/occipital lobe
occlusion, artery /4/Medicine/Disease/Kinds/Organ/Circulation/Blockage/occlusion in artery
occlusion, cue /1/Consciousness/Sense/Vision/Physiology/Depth Perception/Cue/occlusion and depth
occultation /5/Astronomy/Solar System/Orbit/occultation
octagon /3/Geometry/Plane/Polygon/Kinds/Number/octagon
octahedron /3/Geometry/Solid/Polyhedron/Kinds/Number Of Faces/octahedron
octave, wave /5/Physics/Wave/Superposition/Resonance/octave of wave
octavo /7/Machine/Kinds/Printing/Methods/octavo
ocular /7/Machine/Kinds/Optical/Lens/ocular lens
ode /2/Literature/Poetry/Kinds/ode
odometer /7/Machine/Kinds/Instrument/odometer
odor, smell /1/Consciousness/Sense/Smell/Odor/odor
ohmmeter /5/Physics/Electromagnetism/Circuit/Kinds/Instruments/ohmmeter
olfactory bulb /1/Consciousness/Sense/Smell/Anatomy/Neuron Assemblies/olfactory bulb
oligonucleotide /4/Genetics/Recombinant DNA/Amplification/DNA Sequence/oligonucleotide
oligopoly /6/Economics/Microeconomics/Market/Structure/oligopoly
olivine /5/Earth Science/Mineral/Kinds/Silicates/Nesosilicate/olivine
omega-3 fatty acid /4/Nutrition/Nutrient/omega-3 fatty acid
omentum /4/Zoology/Organ/Digestion/Parts/Small Intestine/Connectors/omentum
omnipresent /6/Religion/God/Attributes/omnipresent
omnivore /4/Ecology/Community/Food Chain/Organism Types/omnivore
onanism /4/Zoology/Organ/Reproduction/Sex Methods/Masturbation/onanism
oncology /4/Biology/Subjects/Medicine/oncology
one-to-one correspondence /3/Set Theory/Set Properties/one-to-one correspondence
ontogeny /4/Zoology/Development/Processes/Recapitulation/ontogeny
ontology /6/Philosophy/Metaphysics/Existence/ontology metaphysics
onyx /5/Earth Science/Mineral/Kinds/Silicates/Quartz/onyx
Oort cloud /5/Astronomy/Solar System/Comet/Oort cloud
opal /5/Earth Science/Mineral/Kinds/Silicates/Opal/opal
opalescence, glow /5/Chemistry/Inorganic/Phase/opalescence
opaque material /5/Physics/Wave/Superposition/Refraction/Transfer/opaque material
open shop /6/Economics/Microeconomics/Production/Factors/Labor/Union/Shop/open shop
open-end lease /6/Economics/Microeconomics/Property/Rents/open-end lease
operant conditioning, learning /6/Psychology/Cognition/Learning/Kinds/Conditioning/Instrumental/operant conditioning
operating system /3/Computer Science/Software/Operating System/operating system
operationalism, epistemology /6/Philosophy/Epistemology/Meaning/operationalism and meaning
operations research /3/Computer Science/System Analysis/operations research
operetta /2/Music/Classical/Composition Types/Opera/operetta
ophthalmology /4/Biology/Subjects/Medicine/ophthalmology
ophthalmoscope /1/Consciousness/Sense/Vision/Techniques/ophthalmoscope
opiate peptide /4/Zoology/Organ/Endocrine Gland/Hormone/Nerve/Opioid/opiate peptide
opinion /6/Sociology/Sociological Group/Communication/opinion
opportunity cost /6/Economics/Microeconomics/Production/Factors/opportunity cost
optical activity /5/Physics/Wave/Electromagnetic/Polarization/Dispersion/optical activity
optical fiber /7/Machine/Kinds/Optical/Lens/optical fiber
optimum scale /6/Economics/Microeconomics/Finance/Scale/optimum scale
option /6/Law/Property/option in law
optometry /4/Biology/Subjects/Medicine/optometry
OR gate /3/Computer Science/Hardware/Circuit/Gate/OR gate
oratorio /2/Music/Classical/Composition Types/Church/oratorio
orbit, eye /4/Zoology/Organ/Skeleton/Bones/Head/Jaw/orbit of eye
orbit, planet /5/Astronomy/Solar System/Orbit/orbit of planet
orbital /5/Physics/Matter/Atom/Orbital/orbital of atom
order, classification /4/Biology/Evolution/Classification/Levels/order of organisms
ordinal number /3/Number Theory/Number Types/ordinal number
ordinance /6/Law/Kinds/ordinance
organelle /4/Cell/Organelle/organelle
organic light-emitting device /7/Machine/Kinds/Illumination/Lighting/Display/organic light-emitting device
organism /4/Biology/Life/organism
organized crime /6/Law/Crime/Group/organized crime
orgasm /4/Zoology/Organ/Reproduction/Intercourse/orgasm
oriel /7/Machine/Kinds/Mechanical/Window/oriel
orientability /3/Topology/Surface/Orientation/orientability
Oriental medicine /4/Medicine/Oriental Medicine/Oriental medicine
orifice /4/Zoology/Organ/Digestion/Parts/orifice
origin of life /4/Biology/Life/Origin/origin of life
original sin /6/Religion/Religions/Christianity/Sin/original sin
ornithology /4/Biology/Subjects/Animal/ornithology
orthicon /7/Machine/Kinds/Electronic/Light/Wave/orthicon
orthodontics /4/Biology/Subjects/Medicine/Dentistry/orthodontics
orthogenesis /4/Biology/Evolution/orthogenesis
orthogonal vectors /3/Calculus/Vector/Kinds/orthogonal vectors
orthography /6/Linguistics/Writing/Study/orthography
orthonormal /3/Calculus/Vector/Kinds/orthonormal
orthopedics /4/Biology/Subjects/Medicine/orthopedics
oscillator, circuit /5/Physics/Electromagnetism/Circuit/Kinds/Devices/oscillator device
oscilloscope /7/Machine/Kinds/Instrument/oscilloscope
osculating curve /3/Geometry/Solid/Curve/Kinds/osculating curve
osmosis /5/Chemistry/Inorganic/Phase/Solution/Osmosis/osmosis
osmotic pressure /5/Chemistry/Inorganic/Phase/Solution/Osmosis/osmotic pressure
ossicles /1/Consciousness/Sense/Hearing/Anatomy/Ear/Middle Ear/Bones/ossicles
ostensive definition, semantics /6/Linguistics/Semantics/Definition/ostensive definition
osteopathy /4/Biology/Subjects/Medicine/osteopathy
osteoporosis /4/Medicine/Disease/Kinds/Nutrition/osteoporosis
ostracism /6/Law/Tort/Kinds/Communication/ostracism
other minds problem /6/Philosophy/Mind/Other/other minds problem
otitis media /1/Consciousness/Sense/Hearing/Problems/otitis media
otolaryngology /4/Biology/Subjects/Medicine/otolaryngology
otolith /1/Consciousness/Sense/Vestibular System/Anatomy/otolith
otosclerosis /1/Consciousness/Sense/Hearing/Problems/otosclerosis
ouija /7/Game/Board/ouija
outer ear /1/Consciousness/Sense/Hearing/Anatomy/Ear/Outer Ear/outer ear
outgas /5/Earth Science/Mineral/outgas
out-of-body experience /1/Consciousness/States/Hallucination/out-of-body experience
output, economics /6/Economics/Microeconomics/Production/output in economics
oval window, hearing /1/Consciousness/Sense/Hearing/Anatomy/Cochlea/Window/oval window in ear
ovary, gonad /4/Zoology/Organ/Reproduction/Female/Parts/ovary in animal
overdraft /7/Financial Affairs/Banking/Checking/overdraft
overdrive /7/Machine/Kinds/Transmission/overdrive
overgeneralization /3/Logic/Fallacy/Irrelevance/overgeneralization
overheating /7/Personal Affairs/Health/First Aid/overheating
oversimplification /3/Logic/Fallacy/Deduction/oversimplification
oviparous /4/Zoology/Organ System/Reproductive System/oviparous
ovoviparous /4/Zoology/Organ System/Reproductive System/ovoviparous
ovulation /4/Zoology/Organ/Endocrine Gland/Menstruation/ovulation
oxidation number /5/Chemistry/Inorganic/Oxidation-Reduction/oxidation number
oxidizing agent /5/Chemistry/Inorganic/Oxidation-Reduction/Agent/oxidizing agent
oxygen debt /4/Zoology/Organ/Muscle/oxygen debt
oxymoron /2/Literature/Rhetoric/Irony/oxymoron
oxytocin /4/Zoology/Organ/Endocrine Gland/Hormone/Sex/oxytocin
oxytone /6/Linguistics/Phonetics/Modulation/Accent/Word/oxytone
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Created: 2022.0223