"Nodulus" is a medical term that refers to a small node or nodule, usually found in the body's nervous system. Some potential synonyms for this term include "growth", "lump", "swelling", "pimple", "bump", "knot", "protuberance", "tumor", "lesion", "cyst", and "hernia". These terms can be used in different medical contexts to describe various types and locations of nodules in the body. It's important to note that the exact synonym used may depend on the specific medical condition or diagnosis being discussed, and a qualified medical professional should always provide the most accurate and appropriate terminology.