transversal(s = adj.all) cross, thwartwise, transverse - 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"
transversal, a. [Cf. F. transversal. See Transverse.].
Running or lying across; transverse; as, a transversal line. [1913 Webster]
transversal, n. [Cf. F. transversale.].
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. [1913 Webster]