CPB Certified Professional Biller Certification Practice Exam

What does the prefix 'infra-' mean in medical terminology?

1. Within, into

2. Above, excessive

3. Below, under

4. Condition

The correct answer is: Within, into

The prefix 'infra-' in medical terminology signifies a position that is below or under something else. This prefix is commonly used in various medical and anatomical contexts, such as in terms like "infrastructure," which refers to structures located beneath the surface or foundational elements. In contrast, other prefixes refer to different spatial relationships, such as 'super-' for above or excessive, or those that describe conditions, which does not apply here. Therefore, the correct meaning of 'infra-' is associated with the concept of being below or under, making it an important term in accurately describing anatomical positions or conditions.