the axis of a hyperbola perpendicular to the transverse axis at a point equidistant from the foci.
the segment of this axis equal to one side of a rectangle that has its other side equal to the transverse axis and diagonals that are along the asymptotes of the hyperbola.
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Origin of conjugate axis
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019