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
Recent Examples on the Web
In the post-Planck era of cosmology, this has been measured directly for many individual galaxy clusters.
—
Big Think, 21 Apr. 2026
As such, the research offers validation of the standard model of cosmology, also known as the Lambda Cold Dark Matter (LCDM) model.
—Robert Lea, Space.com, 19 Apr. 2026
If art and craft are not separate in Indigenous cosmologies, why still make this distinction?
—María Carri, Artforum, 16 Apr. 2026
Throughout my stay, gentle touches at the spa (cleansing ceremonies and local teas) and the option to add on one of four signature Alila Moments highlighted traditional Yucatan healers and Mayan cosmology.
—Condé Nast, Condé Nast Traveler, 15 Apr. 2026
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Big Think, 21 Apr. 2026
As such, the research offers validation of the standard model of cosmology, also known as the Lambda Cold Dark Matter (LCDM) model.
—Robert Lea, Space.com, 19 Apr. 2026
If art and craft are not separate in Indigenous cosmologies, why still make this distinction?
—María Carri, Artforum, 16 Apr. 2026
Throughout my stay, gentle touches at the spa (cleansing ceremonies and local teas) and the option to add on one of four signature Alila Moments highlighted traditional Yucatan healers and Mayan cosmology.
—Condé Nast, Condé Nast Traveler, 15 Apr. 2026
See All Example Sentences for cosmology
Cite this Entry
“Cosmology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmology. Accessed 25 Apr. 2026.
Copy CitationKids Definition
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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