The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Baratron Pressure Transducer (0 members)
- AluminiumChlorate (0 members)
- Overdischarge behavior (0 members)
- Host (0 members)
- SquareMetrePerSquareHertz (0 members)
- NCNameData (0 members)
- Holistic (0 members)
- R416 (0 members)
- R754 (0 members)
- Weld quality (0 members)
- PerTemperatureUnit (1 member)
- BoostCharging (0 members)
- PhysicalQuantity (4 members)
- Coupled (2 members)
- CubicMetrePerCubicMetre (0 members)
- D95ParticleSize (0 members)
- MicroCoulombPerCubicMetre (0 members)
- TimeUnit (14 members)
- ElectrochemicalPerformanceQuantity (14 members)
- LeadIIAcetate (0 members)
- GyromagneticRatio (1 member)
- Dosing speed (profile over time) (0 members)
- Velocity (2 members)
- FormicAcid (0 members)
- LengthA3 (0 members)
- LeadSaltCompound (16 members)
- ReactionRateConstant (2 members)
- MicrowaveSintering (0 members)
- Sintering (12 members)
- BraggAngle (0 members)
- MolePerSquareMetrePerSecondPerMetrePerSteradian (0 members)
- Open circuit potential (OCP) measurement (0 members)
- ResonanceEnergy (0 members)
- SexticMetre (0 members)
- AcrylicAcid (0 members)
- OhmicOverpotential (0 members)
- Hard case: Laser power (sealing) (0 members)
- Four-Point Probe Method (0 members)
- Centi (0 members)
- FundamentalLatticeVector (0 members)
- SimulationLanguage (0 members)
- AdditiveManufacturing (2 members)
- ThermalRunawayTest (0 members)
- DecayConstant (0 members)
- LuminousEfficacyUnit (1 member)
- Speed of the rolls (0 members)
- GammaButyrolactone (0 members)
- CobaltIIFluoride (0 members)
- AluminiumCarbonate (0 members)
- Neutralisation (0 members)