**Programming Tool**: An object that allows traversal of a collection.

**Mathematical Process**: A method for repeating calculations or functions.

**Software Design Pattern**: A design pattern to access elements without exposing structure.

**Data Structure Component**: An element in data structures like lists and arrays enabling sequential access.

**Algorithm Stepper**: Repeatedly applies an algorithm until a condition is met.

To perform a repeated process or cycle.

To traverse elements in a collection sequentially.

To apply an algorithm repeatedly for refinement.

To generate successive versions of something systematically.

To execute steps in programming loops continuously.