Ivy Tech Medical Terminology Practice Test

Col/o and colon/o are combining forms that refer to the colon, the large intestine. They come from the Latin word colon and are used when forming medical terms related to that part of the body, such as colonoscopy, colorectal, and colectomy. The other terms are built from different roots: vagina uses colp/o or vagin/o, blue uses cyan/o, and cell uses cyt/o, each with its own separate meaning. So the best answer is colon, the large intestine.