/i looh"meuh nay'teuhr/ , n.
1. a person or thing that illuminates.
2. a device for illuminating, as a light source with a lens or mirror for concentrating light.
3. a person who paints manuscripts, books, etc., with designs in color, gold, or the like.
[ 1475-85; illuminator, equiv. to illumina ( re ) (see ILLUMINE) + -tor -TOR ]