Meaning of transverse axis

trans'verse ax'is

Pronunciation: [key]
— Geom. Geom.
  1. the axis of a hyperbola that passes through the two foci.
  2. the segment of such an axis included between the vertices of the hyperbola. Also called transverse. See diag. under hyperbola.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.