Absorption may refer to:

Chemistry and biology

* Absorption (biology), digestion ** Absorption (small intestine) * Absorption (chemistry), diffusion of particles of gas or liquid into liquid or solid materials * Absorption (skin), a route by which substances enter the body through the skin * Absorption (pharmacology), absorption of drugs into the body

Physics and chemical engineering

* Absorption (acoustics), absorption of sound waves by a material *

Absorption (electromagnetic radiation) In physics, absorption of electromagnetic radiation is how matter (typically electrons bound in atoms) takes up a photon's energy—and so transforms electromagnetic energy into internal energy of the absorber (for example, thermal energy). ...

, absorption of light or other electromagnetic radiation by a material *Absorption air conditioning, a type of solar air conditioning * Absorption refrigerator, a refrigerator that runs on surplus heat rather than electricity * Dielectric absorption, the inability of a charged capacitor to completely discharge when briefly discharged

Mathematics and economics

* Absorption (economics), the total demand of an economy for goods and services both from within and without * Absorption (logic), one of the rules of inference * Absorption costing, or total absorption costing, a method for appraising or valuing a firm's total inventory by including all the manufacturing costs incurred to produce those goods * Absorbing element, in mathematics, an element that does not change when it is combined in a binary operation with some other element * Absorption law, in mathematics, an identity linking a pair of binary operations

Chemistry and biology

Physics and chemical engineering

Mathematics and economics

See also