Polymerization is a process involving a poly-condensation reaction, where smaller units of atoms are bound together to form a chemical compound composed of larger numbers of these units. The resulting compounds are called oligomers or polymers. Synthetic geopolymers (geotechnical engineering), minerals forming various interlayer oligomers in hydroxy-interlayered smectite (clay/soil science), and silicate mineral formation (metamorphic geology) are some examples that involve the polymerization processes.
Cf., geopolymer, hydroxy-interlayered minerals, oligomer, polymer