nebulosity

(neb′yə läsə tē)

noun

  1. the quality or condition of being nebulous
  2. pl. nebulosities nebula ()

Origin: Fr nébulosité < LL nebulositas

See nebulosity in American Heritage Dictionary 4

noun pl. neb·u·los·i·ties
  1. The quality or condition of being nebulous.
  2. Astronomy
    a. A nebula or a nebulalike object.
    b. A mass of material constituting a nebula.

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