What's the noun for absorb? Here's the word you're looking for.
absorbent
Anything which absorbs. [First attested in the early 18th century.]
(physiology) The vessels by which the processes of absorption are carried on, as the lymphatics in animals, the extremities of the roots in plants. [First attested in the mid 18th century.]
(physiology) in living organisms, the process by which the materials of growth and nutrition are absorbed and conveyed to the tissues and organs; taking in by various means, such as by osmosis. [First attested in the mid 18th century.]
Entire engrossment or occupation of the mind. [First attested in the mid 19th century.]
Mental assimilation. [First attested in the mid 20th century.]
(electrical engineering) The retaining of electrical energy for a short time after it has been introduced to the dielectric.
(thermodynamics) The fraction of radiation absorbed by a surface to the total radiation incident on the surface. [First attested in the mid 19th century.]
(analytical) The constant a in the Beer's law relation A = abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.
“Today, a typical sun protection product consists of a UV absorber in a base, which may be alcohol, oil, or more frequently, an emulsion.”
“This population of small growing companies acts as a shock absorber for the economy as a whole.”
“With an MR shock absorber, you can control the vibrations that cause one floor to shift relative to the next floor.”
absorbance
(physics) A logarithmicmeasure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density. [First attested in the mid 20th century.]
“He showed me large drums for storing vacuumed debris to be used in combination with huge bags of different absorbents.”
“There was a bit of a leak from the tanker so we put absorbents down to soak up the spillage, of about half a litre, and put a barrier up around the vehicle.”
“A relative of okra and cotton that towers 12 to 15 feet, kenaf is grown primarily as a fiber source for low-grade paper, particleboard, and oil absorbents.”