The prefix intra- conveys which meaning?

The prefix intra- conveys which meaning?

• A. Outside
• B. Within
• C. Between
• D. Across

Answer: (B)

The main idea here is understanding what the prefix intra- means. Intra- denotes inside or within the boundaries of something. That inside sense is what shows up in words like intramural (within the walls of an institution), intravenous (inside a vein), intracranial (inside the skull), and intracellular (inside a cell). That’s why “within” is the best choice. Outside would be indicated by extra- or ex-, between by inter-, and across by trans-, so they don’t fit the sense of intra- as used in these terms.

The main idea here is understanding what the prefix intra- means. Intra- denotes inside or within the boundaries of something. That inside sense is what shows up in words like intramural (within the walls of an institution), intravenous (inside a vein), intracranial (inside the skull), and intracellular (inside a cell).

That’s why “within” is the best choice. Outside would be indicated by extra- or ex-, between by inter-, and across by trans-, so they don’t fit the sense of intra- as used in these terms.