Source : Webster's Revised Unabridged Dictionary (1913)

Transversal \Trans*ver"sal\, a. [Cf. F. transversal. See
   {Transverse}.]
   Running or lying across; transverse; as, a transversal line.
   -- {Trans*ver"sal*ly}, adv.

Transversal \Trans*ver"sal\, n. [Cf. F. transversale.] (Geom.)
   A straight line which traverses or intersects any system of
   other lines, as a line intersecting the three sides of a
   triangle or the sides produced.

Source : WordNet®

transversal
     adj : extending or lying across; in a crosswise direction; at
           right angles to the long axis; "cross members should be
           all steel"; "from the transverse hall the stairway
           ascends gracefully"; "transversal vibrations";
           "transverse colon" [syn: {cross(a)}, {transverse}, {thwartwise}]