Learn how to say Polymeric correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word polymer:
a substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together, e.g. many synthetic organic materials used as plastics and resins.
mid 19th century: from German, from Greek polumeros ‘having many parts’, from polu- ‘many’ + meros ‘a share’