Which prefix is synonymous with 'four'?

The prefix that means 'four' is "quadri-." In medical terminology, prefixes are added to root words to modify their meaning. The prefix "quadri-" comes from the Latin word "quattuor," which directly translates to "four." This prefix is commonly used in various medical terms, such as quadriplegia, which refers to the paralysis of all four limbs.

In contrast, the other prefixes have different meanings that do not relate to the number four. "Pseudo-" means false or deceptive, "tachy-" refers to something being fast or rapid, and "re-" indicates repetition or doing something again. Understanding these prefixes is essential for decoding medical terminology and understanding the specific nuances of the language used in the healthcare field.