A short quotation or saying at the beginning of a book or chapter, intended to suggest its theme. The novel opens with an epigraph from a famous poet, setting the tone for the story.
An inscription on a building, statue, or coin. The ancient temple had an epigraph carved into its stone facade, detailing its historical significance.
In mathematics, the set of points lying on or above the graph of a real-valued function. In convex analysis, the epigraph of a convex function is itself a convex set.