A polymer containing only a few repeating units, a “few” generally considered as fewer than 20.
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oligo·mer ə-'lig-ə-mər n a polymer or polymer intermediate containing relatively few structural units
oligo·mer·ic -.lig-ə-'mer-ik adj
oligo·mer·iza·tion -mə-rə-'zā-shən n
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ol·i·go·mer (olґĭ-go-mər) [oligo- + Gr. meros part] a polymer formed by the combination of relatively few monomers.Medical dictionary. 2011.