Source : Webster's Revised Unabridged Dictionary (1913)

Absorptive \Ab*sorp"tive\, a.
   Having power, capacity, or tendency to absorb or imbibe. --E.
   Darwin.

Source : WordNet®

absorptive
     adj : having power or capacity or tendency to absorb or soak up
           (liquids); "as absorbent as a sponge" [syn: {absorbent}]
           [ant: {nonabsorbent}]