Lewis & Short

illūmĭnātio (inl-), ōnis, f. [illumino], a lighting up, enlightening (post-class.).

  1. I. Lit.: solis, Macr. S. 1, 18, § 13: vultus tui, Ambros. in Psa. 43, 12.
  2. II. Trop.: bonorum, Tert. Adv. Herm. 15.