enrichment

[en-rich-muhnt]
noun
1.
an act of enriching.
2.
the state of being enriched.
3.
something that enriches: the enrichments of education and travel.

Origin:
1620–30; enrich + -ment

self-enrichment, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
enrich (ɪnˈrɪtʃ)
 
vb
1.  to increase the wealth of
2.  to endow with fine or desirable qualities: to enrich one's experience by travelling
3.  to make more beautiful; adorn; decorate: a robe enriched with jewels
4.  to improve in quality, colour, flavour, etc
5.  to increase the food value of by adding nutrients: to enrich dog biscuits with calcium
6.  to make (soil) more productive, esp by adding fertilizer
7.  physics to increase the concentration or abundance of one component or isotope in (a solution or mixture); concentrate: to enrich a solution by evaporation; enrich a nuclear fuel
 
en'riched
 
adj
 
en'richer
 
n
 
en'richment
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

enrichment
1620s, from enrich + -ment.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Joe repairs equipment in what's called the cascade-a six-hundred-mile complex
  of pipes which comprises the enrichment system.
The enrichment of homozygotes is unexpected if selection in situ is occurring
  here.
One might reasonably expect that this means of behavioral enrichment could make
  the zoo-going public uncomfortable.
The first was devoted to uranium enrichment, the second to heavy-water
  production, which is a step toward producing plutonium.
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