What is the meaning of the suffix "-is" when used in medical terminology?

The suffix "-is" in medical terminology is often used to denote a state or condition. In many cases, it helps to form nouns that indicate a specific state or condition related to a particular disease or abnormality. For instance, terms like "neurosis" or "itis" (inflammation) incorporate this suffix to imply an underlying condition, emphasizing the health-related status of the subject being discussed.

The other options represent different suffix meanings in medical terms: "action or process" refers to suffixes such as "-ation" or "-esis," which indicate a process or action involved in medical terminology. "Pertaining to" is typically conveyed by suffixes like "-al," "-ic," or "-ous," which modify root words to create adjectives describing something related to a specific area of medicine. Lastly, "type or kind" is often associated with the suffix "-oid," which designates similarity or a particular type. Thus, the context of the suffix "-is" firmly aligns with defining a state or condition.