Absorption

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Template:Wiktionary Absorption may refer to:

In physics:
- absorption (chemistry) - absorption of particles of gas or liquid in liquid or solid material as studied in physical chemistry
- absorption (optics) - absorption of photons by a material
- Absorption (acoustics) - absorption of sound waves by a material
Absorption (economics) refers to the total demand of an economy for goods and services both from within and without the economy
In mathematics, the absorption law (<math>a\vee (a\wedge b)=a\wedge (a\vee b)=a</math>) defines a lattice, where the binary operations <math>\wedge</math> and <math>\vee</math> are called meet and join, respectively.

In Psychology, absorption is a measure of one's capacity to become totally focussed. Total absorption is often termed 'Flow (psychology)'. The Tellegen Absorption Scale is a reliable questionnaire measure of absorption.

In Medicine/Biology, absorption may refer to uptake of substances by the GI tract, see Digestion. Also see Osmosis.

Absorption should not be confused with adsorption, the formation of a liquid or gas film on a solid surface.