D defs.my
Entry 1 sense Webster, 1913

Equant

· E·quant · IPA
01 n. A circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; -- called also eccentric equator.
  1. 1.
    A circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; -- called also eccentric equator.(Ptolemaic Astron.) Also: eccentric equator