Which prefix means four?

Which prefix means four?

• A. radi(o)
• B. quadr(i)-
• C. ren(o)
• D. rhin(o)

Answer: (B)

The four-meaning prefix is quadr(i)-. In medical and anatomical terms, quadr- signals that there are four parts or sections, as seen in quadriceps (the four-headed muscle) or quadrilateral (a four-sided shape). The other prefixes point to different body parts or concepts: radi(o) relates to rays or radius, ren(o) to the kidney, and rhin(o) to the nose. So recognizing quadr(i)- helps you read terms that involve the number four, such as quadri- in quadripartite or quadruped.

The four-meaning prefix is quadr(i)-. In medical and anatomical terms, quadr- signals that there are four parts or sections, as seen in quadriceps (the four-headed muscle) or quadrilateral (a four-sided shape). The other prefixes point to different body parts or concepts: radi(o) relates to rays or radius, ren(o) to the kidney, and rhin(o) to the nose. So recognizing quadr(i)- helps you read terms that involve the number four, such as quadri- in quadripartite or quadruped.