Definition:Semimajor Axis of Ellipsoid

Definition

Let $\EE$ be an ellipsoid.

A semimajor axis of $\EE$ is one of the two halves of the major axis of $\EE$ divided by its midpoint.

Also see

• Definition:Semiminor Axis of Ellipsoid
• Definition:Semimean Axis of Ellipsoid

• Definition:Major Axis of Ellipsoid
• Definition:Minor Axis of Ellipsoid
• Definition:Mean Axis of Ellipsoid

• Results about the semimajor axes of an ellipsoid can be found here.

Linguistic Note

The plural of axis is axes, which is pronounced ax-eez not ax-iz.

Compare basis.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): ellipsoid
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): ellipsoid