epicycle |
|
epicycle |
equant |
As nouns the difference between epicycle and equant
is that
epicycle is a small circle whose centre is on the circumference of a larger circle; in Ptolemaic astronomy it was seen as the basis of revolution of the "seven planets", given a fixed central Earth while
equant is the center of a planetary epicycle.
As an adjective equant is
having comparable measurements in all directions; equidimensional.