The meaning of Arduino is just to do experiments, and its practical significance is to help you understand the development process just right.
arduino is a convenient, flexible and easy-to-use open source electronic prototype platform, including hardware (arduino boards of various models) and software (arduino IDE).
arduino Note:
Arduino is developmental and supports source code download. The supported platforms are Windows, MAC OS X and Linux. The Arduino IDE on the Windows platform is downloaded as a zip package, which can be used directly after decompression. A software and hardware platform based on open source code, built on the open source code simple I/O interface version, has a Processing/Wiring development environment similar to Java and C.