* Root: The root of the word is "crepit," which comes from the Latin word "crepare," meaning "to crackle" or "to creak."
* Suffix: The suffix is "-us," a common Latin noun ending indicating a thing or condition.
There is no prefix in the word "crepitus."
So, the word "crepitus" literally means "a cracking or creaking sound." It's often used in medical contexts to describe the sound of bones rubbing together (as in a fracture) or the sound of air escaping from the lungs (as in pneumothorax).