What's the noun for absorpt? 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.”
“The meniscus functions as a shock absorber and weight distributor in the knee joint.”
“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.”