Constitutional repeating unit of connectivity three or more connected at least to three other constitutional repeating units.
Note: In addition, a branch constitutional repeating unit may also be connected to one or more end-groups.
Source:
PAC, 2019, 91, 523. 'Nomenclature and terminology for dendrimers with regular dendrons and for hyperbranched polymers (IUPAC Recommendations 2017)' on page 526 (https://doi.org/10.1515/pac-2016-1217)