subcluster
noun
sub·clus·ter
| \ ˌsəb-ˈklə-stər
\
\
variants:
or sub-cluster
plural subclusters
or sub-clusters
Definition of subcluster
: a cluster that is a subdivision of a larger cluster
… all objects are initially assigned to a single cluster and then are split into smaller subclusters.— Tony H. Grubesic et al. A detailed look at the Virgo cluster reveals that its constituent galaxies are not concentrated smoothly toward the center of the cluster. Instead, some of the galaxies are clumped together into subclusters within the main cluster.— A. J. Meadows
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