- Brightness - The act of illuminating, or supplying with light; the
state of being illuminated. - Festive decoration of houses or buildings with
lights. - Adornment of books and manuscripts with colored
illustrations. See Illuminate, v. t., 3. - That which is illuminated, as a house; also, an
ornamented book or manuscript. - That which illuminates or gives light; brightness;
splendor; especially, intellectual light or knowledge. - The special communication of knowledge to the mind
by God; inspiration.