Which root means 'through'?

• A. Path(o)
• B. Per
• C. Pareunia
• D. Peri

Answer: (B)

In medical terminology, prefixes carry specific directional or descriptive meanings. The one that means “through” is the Latin prefix per-, used to convey through or thoroughly. It appears in terms like perforate (to bore through) and percutaneous (through the skin).

Path(o) relates to disease or feeling (pathology, sympathy). Pareunia is a term tied to sexual intercourse and comes from Greek roots, not indicating through. Peri- means around, not through. So the prefix that best conveys the idea of passing through is per-.