1) Chemical action 2) Chemical change 3) Chemical process 4) Polymerization 1) Polymerization 
A process in which the double or triple bonds in hydrocarbon molecules break and the molecules combine together to form very large molecules.
The process of polymer formation. In many cases this requires nucleation and will only occur above a certain critical concentration. ... (18 Nov 1997) ... 
This is the way that prions may be thought to build up. i.e. by one PrPc joining onto the end of a PrPsc crystal.
The process of creating a polymer from one or more monomers
The repetitive bonding of small molecules (monomers) to produce large molecules (polymers)
The repetitive bonding of small molecules (monomers) to produce large molecules (polymers).