Patelliform is an adjective that describes something resembling the shape of a patella or kneecap. Some synonyms for patelliform include discoid, oval-shaped, round, circular, and saucer-shaped. These words can describe objects, like a dish or a coin, but can also describe body parts, like the eyes or the mouth. Other synonyms might include convex, bulging, or domed. These words describe a shape that curves outward, similar to the way a patella protrudes from the knee. Overall, there are many words that can be used to describe something that has a patelliform shape, and these words can be used in a variety of contexts to add detail and texture to writing or speech.