v.1. To make or undergo a shift from one thing to another: I switched over to the trumpet from the saxophone. Some groups have started using the new operating system, but our division won't switch over until next year.
2. To shift someone or something from one thing to another: The IT department switched our division over to the new operating system. A better medicine came out, so the doctor switched over all her patients.
3. To change channels: I switched over to the classical music station when I got bored with the news.