O / ŏbumbrātĭo
noun

ŏbumbrātĭo

gen. ŏbumbrātōnis · gender feminine · decl. 3rd
a shading; darkening;; an obscuring
a shading, darkening; trop., an obscuring (postclass.): allegoricae caecitatis obumbratio, Arn 5, 186: vicissitudinis, Vulg. Jacob. 1, 17.