The term PUS is an abbreviation for the medical term 'purulent exudate, ' which is a type of bodily fluid that contains pus. The crossword solutions for this term are MATTER (6 letters) and DISCHARGE (9 letters). MATTER is a general term used to describe any physical substance, while DISCHARGE is a term used to describe the release of a substance from a body or container. In the context of PUS, MATTER and DISCHARGE refer to the physical substance of pus and its release from the body, respectively.