D defs.my
Entry 2 senses Webster, 1913

Nebulosity

· Neb·u·los·i·ty · IPA
01 n. The state or quality of being nebulous; cloudiness; haziness; mistiness; nebulousness.
  1. 1.
    The state or quality of being nebulous; cloudiness; haziness; mistiness; nebulousness.
    “The nebulosity . . . of the mother idiom.” — I. Disraeli.
  2. 2.
    The stuff of which a nebula is formed.(Astron.)