The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- MigrationArea (0 members)
- Vapor (0 members)
- Electrocatalysis (0 members)
- DigitalData (0 members)
- ElectricChargePerMassDimension (0 members)
- Electrodissolution (0 members)
- BinaryElectrolyte (0 members)
- InorganicCompound (0 members)
- Aluminium (0 members)
- CellVoltage (0 members)
- AntimonySymbol (0 members)
- ElectricFluxDensity (0 members)
- Role (0 members)
- AnalogicalIcon (0 members)
- ElectricPotential (0 members)
- ChemicalElement (0 members)
- SpeedDimension (0 members)
- LeakageFactor (0 members)
- SiliconSymbol (0 members)
- Admittance (0 members)
- ElectrochemicalInterface (0 members)
- AngularMomentumDimension (0 members)
- LuminousEfficacyOf540THzRadiation (0 members)
- Nucleon (0 members)
- Heteronuclear (0 members)
- MetrologicalSymbol (0 members)
- Pressure (0 members)
- AcousticQuantity (0 members)
- LuminousIntensity (0 members)
- Datum (0 members)
- ModulusOfCompression (0 members)
- String (0 members)
- RestEnergy (0 members)
- BatteryInterface (0 members)
- FrequencyDimension (0 members)
- ChromiumSymbol (0 members)
- ParticlePositionVector (0 members)
- PowerFactor (0 members)
- DiffusionCoefficientForFluenceRate (0 members)
- SpecificHelmholtzEnergy (0 members)
- LCOGraphiteBattery (0 members)
- Existent (0 members)
- CoulometricTitration (0 members)
- ResidualActiveMass (0 members)
- HalfValueThickness (0 members)
- IodineAtom (0 members)
- PunchingFabricatedElectrodeSeparation (0 members)
- SamplingInterval (0 members)
- PerTimeMassDimension (0 members)
- Assembled (0 members)