Noun
An oligomer having six subunits
A subunit of a viral capsid
Source: en.wiktionary.orgThe hexamer is an inactive form with long-term stability, which serves as a way to keep the highly reactive insulin protected, yet readily available. Source: Internet
The hexamer is far more stable than the monomer, which is desirable for practical reasons; however, the monomer is a much faster-reacting drug because diffusion rate is inversely related to particle size. Source: Internet