enrich

verb

1. (transitive)To enhance.
2. (transitive)To make (someone or something) rich or richer.

   “Hobbies enrich lives.”

   “The choke in a car engine enriches the fuel mixture.”

3. (transitive)To adorn, ornate more richly.
4. (transitive)To add nutrients or fertilizer to the soil; to fertilize.

   “European adventurers found themselves within a watery world, a tapestry of streams, channels, wetlands, lakes and lush riparian meadows enriched by floodwaters from the Mississippi River.”

5. (transitive)To increase the amount of one isotope in a mixture of isotopes, especially in a nuclear fuel.

   “The head of the UN’s nuclear watchdog says US strikes on Iran fell short of causing total damage to its nuclear program and that Tehran could restart enriching uranium “in a matter of months,” contradicting President Donald Trump’s claims the US set Tehran’s ambitions back by decades.”

6. (transitive)To add nutrients to foodstuffs; to fortify.
7. To make to rise the proportion of a given constituent.