Which is the root for swelling?

• A. Edem
• B. Dynia
• C. Echo
• D. Ecto

Answer: (A)

Swelling in medical terms is built from a root meaning swelling: edem-. This root is what underpins the term edema, the standard word for fluid buildup in tissues that causes swelling. It comes from Greek oidema, long associated with swelling, so selecting the root that corresponds to swelling is correct. The other roots point to different concepts—dynia denotes pain, echo refers to sound or reflected sound used in imaging, and ecto means outside—so they don’t describe swelling.