Definition: In Greek, "PHPUnit" was a term used for testing software and systems to ensure they met certain standards or criteria. It's similar to modern software testing methodologies like Selenium and Appium. The word means "without prejudice." In English, it typically refers to making sure that software is free of flaws before deployment. So, in summary, "PHPUnit" is a phrase used to test software for certain attributes or requirements; its broader meaning suggests the need for tests to ensure that systems or applications meet established standards.