il·lu·mi·nate 
(ĭ-lmə-nāt′)
(ĭ-lmə-nāt′)tr.v. il·lu·mi·nat·ed, il·lu·mi·nat·ing, il·lu·mi·nates
1. To provide or brighten with light.
2. To decorate or hang with lights.
3.
a. To make understandable; clarify: "Cleverly made attacks can ... serve to illuminate important differences between candidates" (New Republic).
b. To enlighten intellectually or spiritually; enable to understand: "I greatly misdoubt the accuracy of this ... Can you illuminate me?" (Charles Darwin).
4. To adorn (a page of a book, for example) with ornamental designs, images, or lettering in brilliant colors or precious metals.
5. To expose to or reveal by radiation.
n. (-nĭt)
One who has or professes to have an unusual degree of enlightenment.
[Middle English illuminaten, from Latin illūmināre, illūmināt- : in-, in; see IN-2 + lūmināre, to light up (from lūmen, lūmin-, light; see leuk- in the Appendix of Indo-European roots).]
il·lumi·nat′ing·ly adv.