Astro*Dictionary by Michael Erlewine
1 article for "Peri–"
Peri– [Astro*Index]Prefix denoting nearness. Opposite of the prefix, ap-, or apo-, denoting remoteness. Applied to the orbital point which is closest to its central body; thus, perihelion refers to the point closest to the Sun.
See also:
♦ Perigee
Astro*Index Copyright © 1997 Michael Erlewine