Which prefix means large, abnormal size, or long?

• A. Macro-
• B. Mega-
• C. Megalo-
• D. Micro-

Answer: (A)

Understanding size prefixes in medical terms helps you see how we describe how big something is. Macro- signals something that is large or long. It appears in words like macrocyte (a very large cell) or macrocephaly (an abnormally large head) and is used as a general indicator of increased size or length.

This makes macro- the best match for “large, abnormal size, or long,” because it directly conveys largeness in a broad sense. Megalo- also suggests abnormal enlargement, but macro- serves as the standard, broad prefix for large size and length. Mega- means large but isn’t as specific about abnormality, and micro- means small.