Meanings
nounultra diffuse galaxy (plural ultra diffuse galaxies)
plural ultra diffuse galaxies
- astronomyA galaxy with an extremely low luminosity, caused by a lack of star-forming gas.
Cite this entry
APA
ultra diffuse galaxy. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/ultra%20diffuse%20galaxy
MLA
“ultra diffuse galaxy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultra%20diffuse%20galaxy. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “ultra diffuse galaxy,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/ultra%20diffuse%20galaxy.
Source: ultra diffuse galaxy on Wiktionary, CC BY-SA 4.0.