Which prefix means outside?

Which prefix means outside?

• A. Endo
• B. Exo
• C. Eu
• D. Intra

Answer: (C)

Understanding prefixes that describe location helps decode medical terms. Outside is conveyed by exo-; you can see it in words like exoskeleton or exterior, where the meaning is something located outside or outer. The other prefixes here point to different ideas: endo- and intra- mean inside or within, while eu- means good or true rather than position. So the prefix that means outside is exo-.

Understanding prefixes that describe location helps decode medical terms. Outside is conveyed by exo-; you can see it in words like exoskeleton or exterior, where the meaning is something located outside or outer. The other prefixes here point to different ideas: endo- and intra- mean inside or within, while eu- means good or true rather than position. So the prefix that means outside is exo-.