What does the suffix -oid signify?

• A. Inflammation
• B. Disease
• C. Pain
• D. Resembling or like

Answer: (D)

The suffix -oid signals resemblance or likeness. It turns a root into a term that describes something that looks like or has the form of that root, rather than describing a process like inflammation, a disease, or pain. For example, an ovoid shape is egg‑like, and humanoid means resembling a human. In medical terminology, you’ll see -oid used to indicate similarity or form, not pathology, so the best fit for what -oid signifies is “resembling or like.”