Definition:Ap-

Definition

Let $A$ be a body in elliptical orbit $O$ around another body $B$.

Ap- and apo- are prefixes which indicates the more distant of the two apsides of $O$ from the center of mass of $B$.

Also see

• Definition:Aphelion
• Definition:Apogee

• Definition:Peri-

Sources

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