The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- CreepTesting (0 members)
- R2020 (0 members)
- AttoFarad (0 members)
- SquareSecond (0 members)
- Litre (0 members)
- Pouch: Duration (pre-sealing) (0 members)
- ElectricCurrentSignal (6 members)
- SodiumHydroxide (0 members)
- SeparateManufacturing (6 members)
- External person (0 members)
- AreaDensityUnit (8 members)
- DynamicViscosity (0 members)
- NominalProperty (6 members)
- PartialComposition (0 members)
- MicrocanonicalPartitionFunction (0 members)
- VolumetricNumberDensity (1 member)
- Object (9 members)
- JSONData (0 members)
- MilliAmperePerSquareCentiMetre (0 members)
- PeriodDuration (0 members)
- MaterialsModel (0 members)
- HalfLife (0 members)
- Cadmium (0 members)
- RelativePressureCoefficient (0 members)
- MagnesiumShuttleBattery (0 members)
- LithiumManganeseIronPhosphateElectrode (0 members)
- Assemblying (0 members)
- Porosity dry electrode (0 members)
- NonLeakageProbability (0 members)
- VolumeUnit (7 members)
- Polynomial (0 members)
- MagnesiumSymbol (0 members)
- SquarePascalSecond (0 members)
- PhysicalQuantiyByDefinition (2 members)
- ScanningAugerElectronMicroscopy (0 members)
- ZincSulfate (0 members)
- IUPACNomenclature (2 members)
- HeatFlowRate (0 members)
- Rolling (0 members)
- OpenCircuitHold (0 members)
- MicroMolePerSquareMetrePerSecond (0 members)
- CoatingManufacturing (4 members)
- CoperniciumSymbol (0 members)
- CoatedElectrode (6 members)
- Belt Scale Systems (0 members)
- Roll/Stack (contacted) (0 members)
- ChemicalFormula (3 members)
- Insertion parameters (0 members)
- IndiumSaltCompound (15 members)
- TwoManifold (6 members)