[f. as prec. + -ING2.] That enlightens, in various senses of the verb.
1641. Milton, Ch. Govt., Pref. (1851), 96. The supreme inlightning assistance.
1678. Norris, Coll. Misc. (1699), 101. Twas a Crime to taste th inlightning Tree.
1791. Cowper, Odyss., X. 236. Where sets The all enlightning sun.
1824. Coleridge, Aids Refl. (1848), I. 5. This seeing light, this enlightening eye, is reflection.