The suffix -logy means

• A. study of
• B. death
• C. pain, suffering
• D. dilation; expansion

Answer: (A)

The suffix -logy signals a field of study or science of something. That means terms ending in -logy describe the study or science related to the root that comes before it. For example biology is the study of life, and cardiology is the medical specialty dealing with the heart. So -logy essentially means “study of.” The other ideas—death, pain, or dilation—are tied to different word parts (like roots for death or pain) and aren’t conveyed by -logy.