polyacrylamide

/P AA0 L IY0 AH0 K R IH1 L AH0 M IY1 D EY0/
noun
  1. 1

    Any of a range of cross-linked polymers of acrylamide; used to form soft gels for making contact lenses etc.

Source: https://en.wiktionary.org/wiki/polyacrylamide