Obscurátio, onis, f. g. Verbale. Darkening: dimming. vt, Obscuratio solis. Plin. The dimnesse of the sunne.
Lewis and Short: Latin dictionary
obscūrātĭo, ōnis, f. [obscuro], a darkening, obscuring, obscuration (class.). I.Lit.: solis, Cic. Fragm. ap. Aug. Civ. Dei, 5, 15; Quint. 1, 10, 47; Plin. 36, 27, 69, 202: in illā obscuratione, darkness, obscurity, Auct. B. Hisp. 6.—II.Trop.: in quibus (voluptatibus) propter earum exiguitatem, obscuratio consequitur,