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Meaning of conjugate axis

con'jugate ax'is

Pronunciation: [key]
— Geom. Geom.
  1. the axis of a hyperbola perpendicular to the transverse axis at a point equidistant from the foci.
  2. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.