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
Did you know?
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
Yet these voids’ very existence can also tell us quite a bit about cosmology.
—
Bruce Dorminey, Forbes, 23 Feb. 2025
But important questions remain and understanding this enigmatic phenomenon has since been a central challenge for modern cosmology.
—The Physics Arxiv Blog, Discover Magazine, 31 Dec. 2024
This is a question about the cosmology of Tolkien’s universe and the show.
—James Hibberd, The Hollywood Reporter, 30 Aug. 2024
The team then turned to supercomputer simulations of the universe run at the Max Planck Institute for Astrophysics (MPA) to calculate emissions that should be seen from filamentary gas based on the standard model of cosmology, the Lambda Cold Dark Matter (LCDM) model.
—Robert Lea, Space.com, 12 Feb. 2025
See All Example Sentences for cosmology
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Bruce Dorminey, Forbes, 23 Feb. 2025
But important questions remain and understanding this enigmatic phenomenon has since been a central challenge for modern cosmology.
—The Physics Arxiv Blog, Discover Magazine, 31 Dec. 2024
This is a question about the cosmology of Tolkien’s universe and the show.
—James Hibberd, The Hollywood Reporter, 30 Aug. 2024
The team then turned to supercomputer simulations of the universe run at the Max Planck Institute for Astrophysics (MPA) to calculate emissions that should be seen from filamentary gas based on the standard model of cosmology, the Lambda Cold Dark Matter (LCDM) model.
—Robert Lea, Space.com, 12 Feb. 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 12 Mar. 2025.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share