cosmic time

noun

The measure of time by a physical clock with zero peculiar velocity in the absence of matter overdensities or underdensities; commonly used in the Big Bang models of physical cosmology.

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Meanings

nouncosmic time (countable and uncountable, plural cosmic times)

plural cosmic times

  1. countableuncountableastronomyThe measure of time by a physical clock with zero peculiar velocity in the absence of matter overdensities or underdensities; commonly used in the Big Bang models of physical cosmology.
Cite this entry
APA

cosmic time. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/cosmic%20time

MLA

“cosmic time.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cosmic%20time. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “cosmic time,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/cosmic%20time.

Source: cosmic time on Wiktionary, CC BY-SA 4.0.