cosmology
noun
cos·mol·o·gy
käz-ˈmä-lə-jē 
plural cosmologies
1
a
: a branch of metaphysics that deals with the nature of the universe
b
: a theory or doctrine describing the natural order of the universe
2
: a branch of astronomy that deals with the origin, structure, and space-time relationships of the universe
also
: a theory dealing with these matters
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Cosmology and Star Trek
Most religions and cultures include some kind of cosmology to explain the nature of the universe. In modern astronomy, the leading cosmology is still the Big Bang theory, which claims that the universe began with a huge explosion that sent matter and energy spreading out in all directions. One reason why fans watch Star Trek is for the various cosmologies depicted in the show, including different conceptions of space, time, and the meaning of life.
Examples of cosmology in a Sentence
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Even these early examples, nearly 3,000 years old, had royal ties, demonstrating their immediate representation of status, cosmology, and identity.
—
Maria Mocerino, Interesting Engineering, 26 Oct. 2025
In the story of Cenex, a trans being who references multiple universes in breathtaking beauty and humor — from Taino cosmology to Carl Sagan’s pot smoking joy.
—Ana Cristina Frías Cabrera, USA Today, 8 Oct. 2025
But lambda, or constant dark energy, is a central paradigm of the standard model of cosmology, which has so far withstood almost any test.
—Rebecca Boyle, Scientific American, 4 Oct. 2025
Mikael Owunna’s photographs from his Infinite Essence series, which draw on Igbo and Dogon cosmologies, depict luminous bodies suspended in celestial grandeur.
—Okla Jones, Essence, 1 Oct. 2025
See All Example Sentences for cosmology
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Maria Mocerino, Interesting Engineering, 26 Oct. 2025
In the story of Cenex, a trans being who references multiple universes in breathtaking beauty and humor — from Taino cosmology to Carl Sagan’s pot smoking joy.
—Ana Cristina Frías Cabrera, USA Today, 8 Oct. 2025
But lambda, or constant dark energy, is a central paradigm of the standard model of cosmology, which has so far withstood almost any test.
—Rebecca Boyle, Scientific American, 4 Oct. 2025
Mikael Owunna’s photographs from his Infinite Essence series, which draw on Igbo and Dogon cosmologies, depict luminous bodies suspended in celestial grandeur.
—Okla Jones, Essence, 1 Oct. 2025
See All Example Sentences for cosmology
Cite this Entry
“Cosmology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmology. Accessed 4 Nov. 2025.
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cosmology
noun
cos·mol·o·gy
käz-ˈmäl-ə-jē
plural cosmologies
: a branch of astronomy that deals with the beginning, structure, and space-time relationships of the universe
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