The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- MagneticFluxDensityDimension (0 members)
- MomentumDimension (0 members)
- SamplingTime (0 members)
- ChemicalRepresentation (0 members)
- Capping (0 members)
- Nitrogen (0 members)
- ReciprocalLength (0 members)
- SolidElectrolyteInterphase (0 members)
- Attenuation (0 members)
- ClassicalData (0 members)
- Gold (0 members)
- Mass (0 members)
- BismuthSymbol (0 members)
- AqueousMetallicFlowBattery (0 members)
- DensityOfHeatFlowRate (0 members)
- MolarEnthalpy (0 members)
- LiquidSolidMixing (0 members)
- InformationalProcess (0 members)
- TotalCrossSection (0 members)
- ElectricSusceptibility (0 members)
- SprayCoating (0 members)
- ElectrodeContinuumModel (0 members)
- NumberOfTurnsInAWinding (0 members)
- HassiumSymbol (0 members)
- P4DModel (0 members)
- Testing (0 members)
- SecondaryBattery (0 members)
- ParallelConnection (0 members)
- ModulusOfImpedance (0 members)
- Computation (0 members)
- UnspentEngineered (0 members)
- VanadiumAtom (0 members)
- SpatiallyFundamental (0 members)
- Stoichiometry (0 members)
- PotentiostaticProcess (0 members)
- NeelTemperature (0 members)
- IonizationEnergy (0 members)
- Electrodeposition (0 members)
- ElectrochemicalCellFormation (0 members)
- NiobiumSymbol (0 members)
- CrystallineMaterial (0 members)
- AmericiumSymbol (0 members)
- MeasuringDevice (0 members)
- AntiMatter (0 members)
- SpecificEntropy (0 members)
- GalvanicCellCharging (0 members)
- NumberOfElements (0 members)
- MaterialLaw (0 members)
- Volume (0 members)
- ElectrolyteContinuumModel (0 members)