\Con*ver"ging\, a.
Tending to one point; approaching each other; convergent; as,
converging lines. --Whewell.

{Converging rays}(Opt.), rays of light, which, proceeding
   from different points of an object, tend toward a single
   point.

{Converging series} (Math.), a series in which if an
   indefinitely great number of terms be taken, their sum
   will become indefinitely near in value to a fixed
   quantity, which is called the sum of the series; --
   opposed to a {diverging} series.