What is the meaning of the prefix Neo-?

• A. Machine
• B. New
• C. After
• D. Fence

Answer: (B)

Neo- signals that something is new or recent. In medical terms you’ll see it in words like neonatal, which refers to newborns, and neoplasm, meaning a new growth such as a tumor. The other options don’t fit because they come from different roots (mechano- for machines; post- or after for timing after something; fence isn’t a meaningful medical prefix).