Tricapsular is a rare medical term used to describe an anatomical structure with three capsules. Though it may not be a commonly used word in everyday language, there are a few synonyms that we can use to describe the same structure. Some words that come to mind include trilobed, tripartite, and triplex, which all refer to something that has three distinct sections or parts. Other relevant synonyms include triadic, trinary, and ternary, which signify the number three in different ways. In any case, these options can help us describe tricapsular structures in a more familiar and understandable way.