More aciniform refers to something that is shaped like a cluster of grapes or berries. There are several synonyms that can be used to describe such a shape or form, including bunch-like, clustered, globular, spherical, rounded, and bulbous. Additionally, the term aciniform is used primarily in the field of biology, so other scientific or technical words that could be used to describe a similar shape might include vesicular, ovoid, granular, macronucleate, or microcystic. Depending on the context in which the term is used, other descriptive words might also be appropriate to convey the intended meaning, such as dense or compact.