thirdcluster
nounUK /ˈθɜːdˌklʌstə/
US /ˈθɝːdˌklʌstɚ/
A thirdcluster is a group of three things that are close together.
The teacher showed us a thirdcluster of stars in the picture.
OTHER MEANINGS
2. The third small group in a series of clusters.
We finished the first two clusters and started on the thirdcluster.
3. A cluster made of three parts joined together.
The grapes grew in a thirdcluster on the vine.
4. A set of three items counted as one unit.
He packed a thirdcluster of pencils in his bag.