Use absolute value notation: The distance between z and ³⁄₂ is greater than 1.
Let zo = 3/2 + 0.i, then |z - zo| > 1.
zo is a complex number on the Argand diagram.
A textual description of the expression |z - zo| > 1 would be, all those points on the complex plane that are outside of the unit circle centred on zo.