The process of adding nutrients to cereals or grain (e.g. in enriched flour).
Environmental enrichment, the practice of providing animals under managed care with stimuli such as natural and artificial objects.
The process of enhancing breathing gas for scuba diving (e.g. in Enriched Air Nitrox).
Job enrichment, improving work processes and environments so they are more satisfying for employees.
Unjust enrichment, in civil law, a term for someone who has benefitted another party with the expectation of compensation, but who has not been justly compensated.