Certified Paraoptometric (CPO) Practice Exam 2025

What is the function of the prefix "Hypo-" in medical terminology?

1. Above, over

2. Too much

3. Below, under

4. With

The correct answer is: Below, under

The prefix "Hypo-" originates from Greek and is commonly used in medical terminology to denote something that is below, under, or less than normal levels. For instance, when discussing conditions like hypoglycemia, it indicates lower than normal blood sugar levels. Similarly, in the term hypoallergenic, it refers to a lower likelihood of causing an allergic reaction. This prefix indicates a deficiency or reduced state, which is a crucial concept in various medical assessments and diagnoses. The other options suggest meanings that don't align with the established use of "Hypo-." The concept of being above or over, referring to excess, or associated with the idea of being with, do not match its specific medical application. Hence, the correct understanding of "Hypo-" as below or under highlights its importance in conveying precise medical conditions.