Proctoscope is a medical device used for examining the rectum and anus. There are other synonyms for the word proctoscope that is used in medical terms. One synonym is the rectoscope, which is a specialized medical instrument, used for diagnosing and treating rectal and colon diseases. Another synonym is the anoscope, which is a device used for the examination of the anus. The sigmoidoscope is also another synonym that is used, which is a medical device used for examining the sigmoid colon. The colonoscope is also used for examining the large intestine. These synonyms are essential in the medical field as it facilitates better communication and understanding among medical professionals.