The line separating the numerator from the denominator, whether horizontal, (sometimes proscribed) oblique, or diagonal.
A line intersecting a pair of parallel lines.
A set containing one member from each of a collection of disjoint sets.
A line which traverses or intersects any system of other lines transversely.
Running or lying across; transverse.
Exhibiting or pertaining to transversality; connecting hetergeneous elements (fields, kinds of people, etc).