Final answer:
The word 'periarthritis' is composed of 'peri-' meaning around, 'arthr' referring to joint, and '-itis' indicating inflammation, denoting inflammation around a joint.
Step-by-step explanation:
To break down the word periarthritis into its components, we first identify the three main parts: prefixes, roots, and suffixes. The word periarthritis can be broken down into 'peri-' (prefix), 'arthr' (root), and '-itis' (suffix). The prefix 'peri-' means around, 'arthr' refers to joint, and the suffix '-itis' indicates inflammation. Hence, 'periarthritis' refers to inflammation around a joint.