eccentric equator
Equant E"quant, n. [L. aequans, -antis, p. pr. of aequare: cf. F. ['e]quant. See {Equate}.] (Ptolemaic Astron.) A circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; -- called also {eccentric equator}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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