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[neb-yuh-los-i-tee] /ˌnɛb yəˈlɒs ɪ ti/
noun, plural nebulosities.
nebulous or nebular matter.
a nebulous form, shape, or mass.
the state or condition of being nebulous.
Origin of nebulosity
From the Late Latin word nebulōsitās, dating back to 1755-65. See nebulose, -ity Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for nebulosity
Historical Examples
  • The nebulosity of the ten-foot can be resolved into stars by the twenty-foot, and so on.

  • Prof. Barnard adds that the nebulosity is easily visible in a 12-inch telescope.

    Astronomical Curiosities J. Ellard Gore
  • Speculated concerning the Milky Way, the nebulosity of stars, the origin and growth of solar systems.

    Pioneers of Science Oliver Lodge
  • The convolutions of its spiral are filled with numerous starlike condensations, themselves engulfed in nebulosity.

    Astronomy David Todd
  • It is the nebulosity out of which the whole came and into which all is ultimately occluded.

    The Mystery of Space Robert T. Browne
  • Photographs show that the brighter stars of the Pleiades are involved in nebulosity.

    Astronomical Curiosities J. Ellard Gore
  • There are bristled comets; these resemble the skins of beasts with the fur on them, and are surrounded by a nebulosity.

    Astronomy for Amateurs Camille Flammarion
  • By going back as far as possible, we thus arrive at a nebulosity so diffused that its existence could hardly be suspected.

  • There are bristling comets, they are like the skins of beasts with their hair on, and are surrounded by a nebulosity.

    Astronomical Myths John F. Blake
  • A later writer on astronomy said that the substance of the nebulosity and the tail is of almost inconceivable tenuity.

    Remarks Bill Nye
British Dictionary definitions for nebulosity


noun (pl) -ties
the state or quality of being nebulous
(astronomy) a nebula
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for nebulosity

1738, from French nébulosité, from Late Latin nebulositatem (nominative nebulositas), from Latin nebulosus, from nebula (see nebula).

Online Etymology Dictionary, © 2010 Douglas Harper
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