The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Laplacian (0 members)
- DischargedEmptyBattery (0 members)
- LithiumIonIronPhosphateBattery (0 members)
- CopperIINitrate (0 members)
- MOEMC (0 members)
- AmountFraction (0 members)
- Elastic Modulus Measurement (0 members)
- ElectricInductance (1 member)
- Weight (0 members)
- MercuryBattery (0 members)
- ThermalRunaway (0 members)
- Gas (3 members)
- NPRatio (0 members)
- SolidElectrolyte (0 members)
- SquareMetrePerMole (0 members)
- Interpreter (1 member)
- AmountSquareTimePerMassVolumeUnit (1 member)
- Interpretant (0 members)
- Country (14 members)
- Residual moisture (dried film) (0 members)
- Slitting/Singulating (Coin/Swagelok) (0 members)
- GlassyCarbonElectrode (0 members)
- NewtonPerRadian (0 members)
- Symbolic (2 members)
- PicoMolePerKilogram (0 members)
- Chemical compound (0 members)
- Potentiometry (0 members)
- SurfaceB2C4 (0 members)
- LithiumManganeseDioxideBattery (3 members)
- BariumBistrifluoromethanesulfonylimide (0 members)
- Remote File (1 member)
- SurfaceArea (2 members)
- QuarticCoulombMetrePerCubicEnergy (0 members)
- Particle image velocimetry (PIV) (0 members)
- Density (4 members)
- Quantity (2 members)
- QualityFactor (0 members)
- PotentiometricStrippingAnalysis (0 members)
- Vector (8 members)
- EquilibriumConstant (3 members)
- R2325 (0 members)
- PicoPrefixedUnit (22 members)
- NewtonSquareMetrePerAmpere (0 members)
- XrayPowderDiffraction (0 members)
- Welding (0 members)
- MicroHenryPerMetre (0 members)
- Discharging (2 members)
- R726 (0 members)
- PerEnergyUnit (0 members)
- GadoliniumAtom (0 members)