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 cosmological (audio) \ adjective
cosmologically \ ˌkäz-​mə-​ˈlä-​ji-​k(ə-​)lē How to pronounce cosmologically (audio) \ adverb
cosmologist \ käz-​ˈmä-​lə-​jist How to pronounce cosmologist (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 According to Sweden’s Royal Academy of Science, which awards the physics prize, Dr Peebles was the person who, in the 1960s, shifted cosmology from speculation to a rigorous discipline. The Economist, "Batteries, exoplanets, cosmology and cell biology win Nobel laurels," 12 Oct. 2019 More books and rising literacy created an eyeglass industry, which in turn brought advances in lens-making, which ultimately made possible the telescope and spelled the end of biblical cosmology. Cullen Murphy, The Atlantic, "Our Predictions About the Internet Are Probably Wrong," 10 Dec. 2019 Lines of communications between countries were severed, and there was little time for discussion of space-gravity and cosmology. Jennifer Leman, Popular Mechanics, "100 Years Ago, Albert Einstein Became a Legend," 5 Nov. 2019 Astronomers are constantly discovering new worlds, investigating the cosmology of the universe and measuring gravitational waves within space-time itself. Michael Byers And Aaron Boley, Twin Cities, "Byers, Boley: How Elon Musk can help save astronomy," 26 Dec. 2019 CalTech physicist Sean Carroll tells the Associated Press' Seth Borenstein and David Keyton that Peebles' win is likely the first Physics Nobel awarded for purely theoretical cosmology. Smithsonian, "Three Win Physics Nobel for Showing Our Place in the Cosmos," 9 Oct. 2019 This mangrove forest is where India and Bangladesh meet, and the story, appropriately, braids together Hindu and Muslim cosmology. Rumaan Alam, Washington Post, "With ‘Gun Island,’ Amitav Ghosh turns global crises into engaging fiction," 8 Sep. 2019 Meanwhile, theoretical cosmologists have been making a more detailed and compelling case for the promise of 21-cm cosmology. Davide Castelvecchi, Scientific American, "The Quest to Unlock the Secrets of the Baby Universe," 26 Aug. 2019 The science of cosmology has had a spectacular run. Dan Hooper, Time, "Will We Ever Find Dark Matter in the Universe?," 6 Dec. 2019

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

22 Feb 2020

Cite this Entry

“Cosmology.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2020.

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More Definitions for cosmology


How to pronounce cosmology (audio)

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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