discontinuous

adjective

1. not continuous; broken; interrupted; intermittent: a discontinuous chain of mountains; a discontinuous argument.
2. Mathematics. (of a function at a point) not continuous at the point.

adjective

1. characterized by interruptions or breaks; intermittent
2. maths (of a function or curve) changing suddenly in value for one or more values of the variable or at one or more pointsCompare continuous (def. 3)

1. Mathematics Relating to a function that contains one or more points where the function is either discontinuous or undefined.