The term "cross-platform" refers to software applications that can operate on multiple operating systems or devices without the need for specific adaptations for each platform. This approach allows developers to reach a broader audience as users can run the application on various systems, such as Windows, macOS, and Linux. Cross-platform development often involves using frameworks or languages like JavaScript or Flutter, which facilitate code reuse and streamline the development process. This versatility enhances user experience and accessibility across different environments.