• (a.) Under the clouds; attended or partly covered or obscured by clouds; somewhat cloudy.
Sub·nu'vo·lar adjective [ Prefix sub + Italian nuvola cloud: confer Latin subnubilus somewhat cloudy.] Under the clouds; attended or partly covered or obscured by clouds; somewhat cloudy. [ R. & Poetic] « Subnuvolar lights of evening sharply slant.» Milnes...