[ 'nɛbjʊləs ]
■ adjective
1》 in the form of a cloud or haze; hazy.
2》 (of a concept or idea) vague or ill-defined.
3》 Astronomy relating to a nebula or nebulae.
Derivatives
nebulosity noun
~ly adverb
~ness noun
Origin
ME (in the sense 'cloudy'): from Fr. nébuleux or L. nebulosus , from nebula 'mist'.