Meanings
nounone-way light time (countable and uncountable, plural one-way light times)
plural one-way light times
- countableuncountableastronomyThe amount of time required for light or a radio signal to travel between the Earth and a celestial body.
Synonyms & antonyms
nounthe elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
Similar
OWLT
Broader
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
one-way light time. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/one-way%20light%20time
MLA
“one-way light time.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/one-way%20light%20time. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “one-way light time,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/one-way%20light%20time.
Source: one-way light time on Wiktionary, CC BY-SA 4.0.