Botryoid

a.

1.

Having the form of a bunch of grapes; like a cluster of grapes, as a mineral presenting an aggregation of small spherical or spheroidal prominences; as, botryoidal hematite.

Adj.

1.

botryoid - resembling a cluster of grapes in form Synonyms: botryoidal, boytrose

botryoidal, boytrose, grape, grapevine