- ellipsograph
- ellipsoid
- ellipsoidal
- ellipsoidal calculus
- ellipsoidal coordinate
- ellipsoidal function
- ellipsoidal harmonic (= ellipsoidal harmonic function)
- ellipsoidal harmonic of the first kind
- ellipsoidal harmonic of the second kind
- ellipsoidal section
- ellipsoidal surface
- ellipsoidal surface of revolution
- ellipsoidal wave equation
- ellipsoid geodesic
- ellipsoid method
- ellipsoid of correlation
- ellipsoid of inertia
- ellipsoid of revolution
- ellipsoid packing
- elliptic adjoint orbit
- elliptically contoured distribution
- elliptically curved oval
- elliptic alpha-function
- elliptical projection
- elliptic argument