a material that sorbs another substance; i.e. that has the capacity or tendency to take it up by either absorption or adsorption

become imbued

a porous mass of interlacing fibers that forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used

(physics) material in a nuclear reactor that absorbs radiation

cotton made absorbent by removal of the natural wax