enrich
v//ɪnˈɹɪt͡ʃ//berika, anrika
(transitive) To make (someone or something) rich or richer. [from Template:SAFESUBST: c.]
(transitive) To add nutrients or fertilizer to the soil; to fertilize. [from Template:SAFESUBST: c.]
(transitive) To add nutrients to foodstuffs; to fortify.
(physics, transitive) To increase the amount of one isotope in a mixture of isotopes, especially in a nuclear fuel. [from Template:SAFESUBST: c.]