Meanings
nounlight millennium (plural light millenniums)
plural light millenniums
- astronomyA unit of length equal to the distance light travels in one millennium.
Cite this entry
APA
light millennium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/light%20millennium
MLA
“light millennium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/light%20millennium. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “light millennium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/light%20millennium.
Source: light millennium on Wiktionary, CC BY-SA 4.0.