cos·​mol·​o·​gy | \ käz-ˈmä-lə-jē How to pronounce cosmology (audio) \
plural cosmologies

Definition of cosmology

1a : 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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Other Words from cosmology

cosmological \ ˌkäz-​mə-​ˈlä-​ji-​kəl How to pronounce cosmology (audio) \ adjective
cosmologically \ ˌkäz-​mə-​ˈlä-​ji-​k(ə-​)lē How to pronounce cosmology (audio) \ adverb
cosmologist \ käz-​ˈmä-​lə-​jist How to pronounce cosmology (audio) \ noun

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 Shriner, who died in 2018, cobbled together a freaky cosmology from a buffet of conspiracy theories that went well beyond your garden-variety end-time Christianity and into the world of reptiles, clones, and aliens. Vulture Editors, Vulture, "This Week in True-Crime Podcasts: The Unsolved Case of the Doodler," 19 Mar. 2021 Gone was the cosmology of hell realms and hungry ghosts and karma and rebirth. David Kortava, Harper's Magazine, "Lost in Thought," 16 Mar. 2021 Tibetan iconography was an exercise in cosmology as well as a religious art form and an aid to meditation. John Gray, The New York Review of Books, "Is Philosophy an Art?," 9 Mar. 2021 Thus our cosmology is already, in some sense, partly created from kanaka knowledge. Popular Science, "In Hawaii, an ancient observatory offers lessons for modern stargazers," 9 Mar. 2021 These are the frontiers of our knowledge, and represent some of the most pressing problems in modern cosmology today. Ethan Siegel, Forbes, "What Do We Really Know About Dark Matter And Black Holes?," 3 Mar. 2021 The only American institution that remains worthy of your confidence, in the bleak cosmology of Tucker Carlson Tonight, is Tucker Carlson. Megan Garber, The Atlantic, "The Unmaking of American Cynicism," 26 Feb. 2021 Gravitational waves offer a way to measure the universe that is completely independent of every other method in the history of cosmology, said Salvatore Vitale, an astrophysicist at the Massachusetts Institute of Technology. Quanta Magazine, "Growing Inventory of Black Holes Offers a Radical Probe of the Cosmos," 17 Feb. 2021 Perhaps Linde’s ego and bravado were essential for the conception of his fantasmagoric cosmology. Alan Lightman, The Atlantic, "‘It Seems That I Know How the Universe Originated’," 8 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosmology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cosmology

circa 1656, in the meaning defined at sense 1a

History and Etymology for cosmology

New Latin cosmologia, from Greek kosmos — see cosmic + New Latin -logia -logy

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Time Traveler for cosmology

Time Traveler

The first known use of cosmology was circa 1656

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Statistics for cosmology

Last Updated

7 Apr 2021

Cite this Entry

“Cosmology.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2021.

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More Definitions for cosmology



English Language Learners Definition of cosmology

: the scientific study of the origin and structure of the universe

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More from Merriam-Webster on cosmology

Nglish: Translation of cosmology for Spanish Speakers

Britannica English: Translation of cosmology for Arabic Speakers Encyclopedia article about cosmology

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