A simple polymer containing a small number of repeating units.
Note: The oligomer most frequently encountered in the textile industry is the cyclic trimer of poly(ethylene benzene-1,4-dicarboxylate) (poly(ethylene terephthalate)), the polymer used for polyester fibre. This material can form deposits during the processing and dyeing of yarns and fabrics
Textile Resource (http://www.textile.org.uk)