WordReference Random House Learner's Dictionary of American English © 2026
neb•u•la /ˈnɛbyələ/USA pronunciation   n. [countable], pl. -lae /-ˌli, -ˌlaɪ/USA pronunciation  -las. 
  1. Astronomya cloud of gas and dust in outer space between stars.
neb•u•lar, adj. 

WordReference Random House Unabridged Dictionary of American English © 2026
neb•u•la  (neb′yə lə),USA pronunciation n., pl. -lae (-lē′, -lī′),USA pronunciation -las. 
  1. Astronomy
    • AstronomyAlso called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula. 
    • (formerly) any celestial object that appears nebulous, hazy, or fuzzy, and extended in a telescope view.
  2. Pathology
    • a faint opacity in the cornea.
    • cloudiness in the urine.
  3. Drugsany liquid medication prepared for use as a spray.
  • Latin: a mist, vapor, cloud; akin to Greek nephélē cloud, German Nebel fog, haze
  • 1655–65
neb′u•lar, adj. 

'nebular' also found in these entries (note: many are not synonyms or translations):
nebular hypothesis - nebulosity - nebulous

🗣️Forum discussions with the word(s) "nebular" in the title:


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