Definition from Wiktionary, the free dictionary
- (architecture) A doctrine, in several fields, that the function of something should be reflected in its design and the materials used in its construction
- (philosophy) The definition of mental states in terms of their causes and effects
- (social sciences) The idea that social and cultural cohesion are a function of the interdependence and interactions of the institutions of a society
- (psychology) A general school of thought that considers psychological phenomena in terms of their role in adaptation to the person's environment
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