The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- MolecularFormula (0 members)
- Namer (0 members)
- LiquidGasSuspension (0 members)
- SemanticParameter (0 members)
- AlternativeFullFlowBattery (0 members)
- Atto (0 members)
- ElementaryWork (0 members)
- Thickness (0 members)
- PositionVector (0 members)
- Spacing (0 members)
- LiquidSol (0 members)
- ElementalSubstance (0 members)
- Momentum (0 members)
- DubniumSymbol (0 members)
- Peta (0 members)
- CoefficientOfHeatTransfer (0 members)
- Dielectrometry (0 members)
- FrequencyPerVolumeDimension (0 members)
- Process (0 members)
- WattHourPerLitre (0 members)
- SelfDischarge (0 members)
- ParticleEmissionRate (0 members)
- ContinuumModel (0 members)
- StaticFrictionForce (0 members)
- NestedSemanticStatement (0 members)
- AverageLogarithmicEnergyDecrement (0 members)
- PositionVector (0 members)
- CeriumSymbol (0 members)
- ElectronMass (0 members)
- LithiumOreDeposit (0 members)
- NeutralAtom (0 members)
- Mixing (0 members)
- FabricatedBattery (0 members)
- NMC611Cell (0 members)
- Measurement (0 members)
- MolecularConcentration (0 members)
- Calcium (0 members)
- PotentiostaticChronoamperometry (0 members)
- Sorting (0 members)
- VoltageControlledProcess (0 members)
- StandardAmountConcentration (0 members)
- Minus (0 members)
- ThreeManifold (0 members)
- CurrentCollectorContinuumModel (0 members)
- SIMetricPrefix (0 members)
- MaximumConcentration (0 members)
- Elaboration (0 members)
- ChemicalEntity (0 members)
- MaximumEfficiency (0 members)
- CoherenceLength (0 members)