The term PREFIX BONE can be broken down into two parts: a prefix and a word. The prefix is 'oste, ' which means BONE, and the word is 'BONE.' Osteo is a five-letter variation of the prefix, which is derived from the Greek word for BONE. Together, these two terms refer to the study of bones and their structure. Osteology is the scientific study of bones, and osteopaths are medical professionals who specialize in treating BONE-related conditions.