The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- PerQuarticLengthUnit (0 members)
- AlgebraicOperator (2 members)
- ApplicationSpecificScript (0 members)
- HectoPascalPerKelvin (0 members)
- PrecipitationHardening (0 members)
- ByteData (0 members)
- DimethylSulfate (0 members)
- Electrode film (dry) (0 members)
- RestMass (1 member)
- ElectronAffinity (0 members)
- LiquidPhaseSintering (0 members)
- EntropyPerAmountUnit (1 member)
- Organizational unit (13 members)
- PulseDuration (1 member)
- CharacterisationMeasurementInstrument (0 members)
- D50ParticleSize (0 members)
- LengthB3 (0 members)
- OSW3d03a403facd48c6b75e7ab8b9299218 (2 members)
- Location (10 members)
- AmountTemperatureUnit (2 members)
- R18650 (0 members)
- IndiumIIIPhosphate (0 members)
- RelativeMassDensity (0 members)
- CopperIIIodide (0 members)
- AtomicPhysicsCrossSection (1 member)
- ElectrochemicalRelation (3 members)
- KiloVoltAmpere (0 members)
- NuclearMagneticResonance (0 members)
- UpperCurrentLimit (0 members)
- AdsorptiveStrippingVoltammetry (0 members)
- PerPascalSecond (0 members)
- ExaCoulomb (0 members)
- FemtoJoule (0 members)
- DoseEquivalent (0 members)
- TemperatureTimeUnit (1 member)
- PicoSiemensPerMetre (0 members)
- Ammonia (0 members)
- Hour (0 members)
- AnalyticalElectronMicroscopy (0 members)
- UnifiedAtomicMassConstant (0 members)
- LengthA (0 members)
- Capillary Rise Method (0 members)
- Local File (0 members)
- MaximumPulseDischargingCurrent (0 members)
- IridiumBasedElectrode (0 members)
- Data (4 members)
- FloatCharging (0 members)
- KilogramPerMetrePerSecond (0 members)
- RadiumAtom (0 members)
- CopperIIodide (0 members)