Sub‐nu″vo‐lar (?), a. [Pref. sub + It. nuvola cloud: cf. L. subnubilus somewhat cloudy.] Under the clouds; attended or partly covered or obscured by clouds; somewhat cloudy.
Subnuvolar lights of evening sharply slant. Milnes.
Webster's Dictionary 1913
Sub‐nu″vo‐lar (?), a. [Pref. sub + It. nuvola cloud: cf. L. subnubilus somewhat cloudy.] Under the clouds; attended or partly covered or obscured by clouds; somewhat cloudy.
Subnuvolar lights of evening sharply slant. Milnes.