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shaped like a bunch of grapes
[C19: from New Latin aciniformis; see acinus]


(əˈsɪn əˌfɔrm)

clustered like grapes.
References in periodicals archive ?
28); PMS with three large cylindrical gland spigots, one small minor ampullate gland spigot and one aciniform gland spigot (Fig.
Carbon blacks are characterized by their aciniform morphology or grape-like structure comprised of particles fused together as rigid structures termed aggregates.
They wrap these freshly caught snacks in another silk, called aciniform silk.
The sheet is probably made of silk from the linearly arranged brush of posterior lateral spinneret aciniform gland spigots (Hormiga et al.
The spiders wrap their captured prey with aciniform silk and construct their egg sacs primarily from tnbuliform silk.