Definition: The word "patErrorManager.php" refers to a PHP function or class that contains error messages, such as "403 Forbidden" for unauthorized access, "500 Internal Server Error" for server errors, and "Not Found" when no data is found. It's typically used in situations where developers need to handle client-side errors related to application functionality. The definition of the word "patErrorManager.php" includes its purpose and use cases within software development contexts.