from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The quality or condition of being nebulous.
  • n. Astronomy A nebula or a nebulalike object.
  • n. Astronomy A mass of material constituting a nebula.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the characteristic of being nebulous; cloudiness

from the GNU version of the Collaborative International Dictionary of English

  • n. The state or quality of being nebulous; cloudiness; haziness; mistiness; nebulousness.
  • n.
  • n. The stuff of which a nebula is formed.
  • n. A nebula.

from The Century Dictionary and Cyclopedia

  • n. The state of being nebulous or cloudy; cloudiness; haziness; the essential character of a nebula.
  • n. The faint misty appearance surrounding certain stars; an ill-defined nebula without local condensation; also, a nebula in general.


Sorry, no etymologies found.


  • As a matter of fact, her thoughts were always fixed on the artistic, social, and dramatic aspects of life, with unfortunately a kind of nebulosity of conception which permitted no condensation into anything definite or concrete.

    The Titan

  • Well, now, where in the real universe do you find that kind of nebulosity-so thick and extensive that a ship can actually lose its bearings, wander around lost, using up its film among other supplies, until it chances to emerge in clear space?


  • Apparently, the region was full f nebulosity which is normally invisible to us.

    Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86

  • Because of the spindle-like form, I incline to think of a super-Zeppelin, but another observation, which seems to indicate that it was a world, is that, though it was opaque, and "eclipsed the sun," it had around it a kind of nebulosity -- or atmosphere?

    The Book of the Damned

  • Apparently, the region was full of nebulosity which is normally invisible to us.

    The Scientific Monthly, October-December 1915

  • The other, tall, meagre, with long grizzled hair and a wild unsettled look about the eyes, was a man of science; had written works well esteemed upon mathematics and electricity, also against the existence of any other creative power than that which he called "nebulosity," and defined to be the combination of heat and moisture.

    The Parisians — Volume 05

  • Most thought M76 contained "stars with nebulosity".

    Universe Today Guide to the Messier Objects | Universe Today

  • Most globulars these evolutionary differences are fairly minor, and suggest that star formation was not all at once but over a short period – possibly with intermittent burst of star formation depending on the gas collapse of the nebulosity that forms the stars in the globular.

    Alien Star Clusters Are Invading the Milky Way | Universe Today

  • If you take a look at them with binoculars or a telescope, you might notice a faint whisper of light around these stars that's called nebulosity.

    Astronomy For Kids: Bull Ridin' Taurus | Universe Today

  • They orbit a common center of gravity inside a shared nebulosity.

    Unprecedented Eruption Catches Astronomers By Surprise | Universe Today


Log in or sign up to get involved in the conversation. It's quick and easy.