Dictionary
lu•min•ism
Pronunciation: (lOO'mu-niz"um), [key]—
n.
a style of landscape painting practiced by some mid-19th-century American artists, esp. of the Hudson River School, that emphasized meticulously crafted realism and a technically precise rendering of atmosphere and of the effects produced by direct and reflected light.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.