— luminist , n. , adj.
/looh"meuh niz'euhm/ , 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.
[ 1900-05; lumin-, s. of lumen light + -ISM ]