Obs.–0 [agent-n. f. L. fuscāre to darken, f. fuscus dark, dusky: see -ATION.] ‘A darkening; obscurity; obfuscation’ (W.).
1656–81. Blount, Glossogr., Fuscation, a darkning or clouding.
1727. in Bailey, vol. II.
1755. in Johnson.
