superabsorbents

/ˌsupəræbˈzɔːrbənts/
noun
  1. Materials that can absorb and hold a very large amount of liquid.
    • New superabsorbents can absorb hundreds of times their own weight in water.
    • The company specializes in superabsorbents for agricultural and medical use.
    • Superabsorbents are commonly found in disposable diapers and sanitary pads.