Which prefix means 'false'?

The prefix that means 'false' is "pseudo-." This prefix is derived from the Greek word "pseudes," which translates to 'lying' or 'false.' It is commonly used in medical terminology and other scientific fields to indicate a resemblance to something but not quite the same; for example, "pseudopregnancy" refers to a condition resembling pregnancy but without the actual presence of a fetus.

In contrast, the other prefixes have different meanings: "pro-" typically means 'for' or 'in favor of,' "re-" indicates 'again' or 'back,' and "sub-" refers to 'under' or 'below.' Understanding these prefixes is essential for decoding complex medical terms accurately and provides foundational knowledge for further study in medical terminology.