The Free On-line Dictionary of Computing (30 December 2018):

class method

    1. A method that operates on a class object (an
   object of class "class").  A class method is really just an
   ordinary object method that happens to operate on class objects.

   A class method might, for example, return a list of objects
   representing the methods and attributes of the given class.

   2. A static method.

   (2014-09-06)