cos·​mic | \ˈkäz-mik \
variants: or less commonly cosmical \ˈkäz-​mi-​kəl \

Definition of cosmic 

1a : of or relating to the cosmos, the extraterrestrial vastness, or the universe in contrast to the earth alone cosmic radiation

b : of, relating to, or concerned with abstract spiritual or metaphysical (see metaphysical sense 2) ideas cosmic wisdom

2 : characterized by greatness especially in extent, intensity, or comprehensiveness a cosmic thinker a book of cosmic significance

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Other Words from cosmic

cosmically \ˈkäz-​mi-​k(ə-​)lē \ adverb

Examples of cosmic in a Sentence

The discovery caused a cosmic shift in people's views of the world. predicted that the war would forever be regarded as a cosmic error

Recent Examples on the Web

Immaculately wrought and often quite funny, this exceedingly entertaining movie puts the conquest of the West in cosmic terms, where death and destruction reign. John Powers, Vogue, "These Were 2018’s 12 Best Movies," 12 Dec. 2018 So Endgame will seemingly begin with Iron Man needing a cosmic rescue. Alex Abad-santos, Vox, "How the Avengers: Endgame trailer hints that Captain Marvel will save the day (and Iron Man)," 8 Dec. 2018 Hayabusa2 is also slated to collect a sample of Ryugu rock and send it back to Earth at the end of 2020 so that the pristine cosmic material can be analyzed by scientists directly. Megan Gannon,, "'Crazy' Rocky Surface of Asteroid Ryugu Revealed in MASCOT Lander Images," 13 Oct. 2018 And big cosmic events make a ton of them. While neutrinos are everywhere, the one detected in Antarctica by the IceCube Neutrino Observatory was especially energetic. John Wenz, Popular Mechanics, "Blaze It: Far-Out High-Energy Neutrino Came From a Blazar," 12 July 2018 How black-hole monsters grow Explaining how black holes could have gobbled up enough matter to reach supermassive sizes early in cosmic history has proved extraordinarily challenging for scientists. Charles Q. Choi, Scientific American, "Oldest Supermassive Black Hole Found from Universe’s Infancy," 6 Dec. 2017 Schilling's music often dabbled in cosmic and science fictional themes. John Wenz, Popular Mechanics, "17 Songs About Space That Are Cosmically Great," 3 Mar. 2017 And justifying it as a cosmic correction, for which an innocent child bears the weight? Carolyn Hax, The Seattle Times, "Excluding boy, mom from playground fun rated ‘terrible’," 15 Oct. 2018 The cosmic event takes place each August when the Earth passes through the Comet Swift–Tuttle's debris, pieces of which enter the Earth's atmosphere, creating flashes of light across the sky. Condé Nast Traveler, "How to Watch the Perseid Meteor Shower 2018," 10 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosmic.' 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 cosmic

1685, in the meaning defined at sense 1a

History and Etymology for cosmic

Greek kosmikos, from kosmos order, universe

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Statistics for cosmic

Last Updated

15 Dec 2018

Look-up Popularity

Time Traveler for cosmic

The first known use of cosmic was in 1685

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More Definitions for cosmic



English Language Learners Definition of cosmic

: of or relating to the universe or outer space

: relating to spiritual matters

: very large or important


cos·​mic | \ˈkäz-mik \

Kids Definition of cosmic

: of or relating to the whole universe

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More from Merriam-Webster on cosmic

Thesaurus: All synonyms and antonyms for cosmic

Spanish Central: Translation of cosmic

Nglish: Translation of cosmic for Spanish Speakers

Britannica English: Translation of cosmic for Arabic Speakers

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