What does the prefix "auto-" mean?

The prefix "auto-" derives from the Greek word "autós," which means "self." This prefix is commonly used in medical terminology and other fields to indicate that something occurs independently or is performed by oneself. For instance, in medical terms like "autologous," where it refers to tissue or cells originating from the individual’s own body, "auto-" clearly conveys the concept of self. This understanding is essential in various contexts, such as distinguishing between procedures or conditions that are self-induced or self-sourced compared to those that involve outside sources or influences.