Definify.com
Webster 1913 Edition
Botryoidal
{
Bot′ry-oid
,Botˊry-oid′al
, }Adj.
[Gr.
[GREEK]
cluster of grapes + -oid
.] 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
Syn. – botryose.