enrichment

• inrichment (archaic)

enrich +‎ -ment

• IPA^(key): /ɪnˈɹɪt͡ʃ.mənt/, [ɪnˈɹɪt͡ʃ.mn̩t]

enrichment (countable and uncountable, plural enrichments)

1. The act of enriching or something enriched.
2. The process of making enriched uranium.
3. The addition of sugar to grape juice used to make wine; chaptalization.
4. (education) Extracurricular activities for students.
5. Stimulation provided for the mental wellbeing of a captive animal.
   • 2009, Marc Bekoff, Encyclopedia of Animal Rights and Animal Welfare, 2nd Edition, page 208:

     The practice of enrichment to address these problems started in zoos and later spread to more intensively managed captive settings, such as farming and animal laboratories.

• richness

• gains