https://doi.org/10.1351/goldbook.ST07195
Polymer that can absorb and retain extremely large amounts of a liquid relative to its own mass.
Notes:
  1. The liquid absorbed can be water or an organic liquid.
  2. The swelling ratio of a superabsorbent polymer can reach the order of 1000:1.
  3. Superabsorbent polymers for water are frequently polyelectrolytes.
Source:
PAC, 2004, 76, 889. (Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)) on page 903 [Terms] [Paper]