Definition - What does Absorbent mean?
An absorbent is any material capable of retaining a liquid within its molecular fabric or boundaries. Absorbents are used to reduce the likelihood of corrosion by reducing the amount of moisture on or around a corrosion-prone metal surface.
Corrosionpedia explains Absorbent
Absorbents are typically porous solids capable of soaking up liquids partially or completely. They may change either physically or chemically once the foreign liquid substance is contained.