What does the prefix "infra-" mean?

The prefix "infra-" means "lower than" or "beneath." It is commonly used in medical terminology to describe locations or structures that are situated beneath a certain point or structure in the body. For example, "infrapatellar" refers to the area below the patella (kneecap).

This prefix is distinct from other options; for instance, "between" would typically be indicated by "inter-," while "above" would correspond to "supra-." The term "out of" is generally represented by the prefix "ex-" or "ecto-." Understanding the specific meaning of "infra-" helps in contextualizing and interpreting medical terms accurately.