The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Dispersion (0 members)
- AbrasiveStrippingVoltammetry (0 members)
- Record (0 members)
- SurfaceCoefficientOfHeatTransfer (0 members)
- Inequality (0 members)
- ArsenicSymbol (0 members)
- Crystal (0 members)
- ZincSymbol (0 members)
- CycleNumber (0 members)
- OneManifold (0 members)
- SupplyChain (0 members)
- InternalConductance (0 members)
- MolarAttenuationCoefficient (0 members)
- SpentEngineered (0 members)
- ConstantCurrentConstantVoltageCharging (0 members)
- Index (0 members)
- AnalogData (0 members)
- CurrentLinkage (0 members)
- GoldAtom (0 members)
- MolybdenumAtom (0 members)
- StainlessSteel (0 members)
- ReversibleHydrogenElectrode (0 members)
- DragForce (0 members)
- Compressibility (0 members)
- PhaseHeterogeneousMixture (0 members)
- BismuthAtom (0 members)
- Event (0 members)
- DirectionAndEnergyDistributionOfCrossSection (0 members)
- TemporalRole (0 members)
- PhaseHomogeneousMixture (0 members)
- Coercivity (0 members)
- P3DModel (0 members)
- TotalComposition (0 members)
- ChronoMethodsHighSpeed (0 members)
- RutheniumSymbol (0 members)
- Permittivity (0 members)
- LithiumMetalElectrode (0 members)
- TitaniumAtom (0 members)
- Curve (0 members)
- LithiumConversionElectrode (0 members)
- Electrode (0 members)
- TotalMassStoppingPower (0 members)
- ThermalConductivityDimension (0 members)
- MeasurementResult (0 members)
- Elementary (0 members)
- AirVehicle (0 members)
- TransportEfficiency (0 members)
- ElectroanalyticalTechnique (0 members)
- IsentropicCompressibility (0 members)
- Determination (0 members)