What is android define?

Android is an open-source mobile operating system developed by Google. It is designed primarily for touchscreen mobile devices such as smartphones and tablets. The Android platform is built on the Linux kernel and includes a user interface, middleware and key applications. It allows developers to create mobile applications using Java programming language. Android has become the most popular mobile operating system in the world as it allows users to customize their devices in a variety of ways. The Google Play Store is the primary app store for Android, which allows users to download and install applications, and also purchase content including movies, music and books. Android is continuously evolving with new versions and updates being released regularly with improved features and functionality.