(transitive) To enhance.

(transitive) To make (someone or something) rich or richer.

(transitive) To adorn, ornate more richly.

(transitive) To add nutrients or fertilizer to the soil; to fertilize.

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

(transitive) To add nutrients to foodstuffs; to fortify.

(chemistry) To make to rise the proportion of a given constituent.