Formulas
- Decimal32 floating-point format
- Decimal64 floating-point format
- Decimal representation
- Deficient number
- Deformation (physics)
- Degenerate conic
- Degenerate energy levels
- Degree of unsaturation
- Degrees of freedom (physics and chemistry)
- Delta-sigma modulation
- Delta-v
- Delta baryon
- Delta method
- Delta potential
- Demagnetizing field