Aciniform is a term that is rarely used in everyday language, which may make it difficult to find synonyms. However, some potential synonyms that could be used to describe aciniform shapes or structures include "grape-like," "clustered," "globular," "berry-shaped," or "bulbous." Other related terms that might be used to describe similar shapes or structures include "spherical," "round," "oval," or "elliptical." These words all convey a sense of a three-dimensional shape, which is often used to describe biological structures such as glands, tumors, or other types of growths. By using these synonyms, it is possible to communicate more effectively about these types of structures in a variety of contexts.