The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- CalciumIodide (0 members)
- StaticFrictionCoefficient (0 members)
- SeebeckCoefficient (0 members)
- CubicMetrePerKelvin (0 members)
- MegaPascalCubicMetrePerSecond (0 members)
- DroppingMercuryElectrode (0 members)
- Pouch: Duration (0 members)
- MaximumCapacity (0 members)
- End of discharge voltage (0 members)
- ParasiticReaction (0 members)
- KiloNewton (0 members)
- CentiMetreSecondDegreeCelsius (0 members)
- Property (7 members)
- MagnesiumPhosphate (0 members)
- MoleKelvin (0 members)
- SquareMetrePerKelvin (0 members)
- ExchangeCurrentDensityData (0 members)
- NanoCoulomb (0 members)
- PulseResponseData (0 members)
- IndiumIIodide (0 members)
- CoinCell (0 members)
- SemioticEntity (4 members)
- KelvinPerSecond (0 members)
- AqueousElectrolyte (3 members)
- ZincSilverOxideBattery (0 members)
- BerylliumAtom (0 members)
- TotalIonization (0 members)
- D10ParticleSize (0 members)
- Hard case: Laser power (0 members)
- NegativeTerminal (0 members)
- Tomography (0 members)
- Duration (degassing) (0 members)
- FilledDischargedBattery (0 members)
- IridiumSymbol (0 members)
- Group (1 member)
- LithiumTriflate (0 members)
- DiethylCarbonate (0 members)
- NickelOxideCompound (2 members)
- SparkErosion (0 members)
- DataAnalysis (0 members)
- RetainedCapacity (0 members)
- AmpereSquareMetrePerJouleSecond (0 members)
- MinimumChargingTemperature (0 members)
- ElectrochemicalDoubleLayerCapacitor (0 members)
- UnintentionalAgency (0 members)
- ChlorineAtom (0 members)
- DegreeCelsiusPerMetre (0 members)
- ParticleRadius (2 members)
- BeginTask (0 members)
- SuperconductionTransitionTemperature (0 members)