/ Dictionary / Index N nebulosity: Meaning and Definition of Find definitions for: neb•u•los•i•ty Pronunciation: (neb"yu-los'i-tē), [key] — pl. -ties. nebulous or nebular matter. a nebulous form, shape, or mass. the state or condition of being nebulous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nebulose nebulosus Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language