cos·​mic | \ ˈkäz-mik How to pronounce cosmic (audio) \
variants: or less commonly cosmical \ ˈkäz-​mi-​kəl How to pronounce cosmical (audio) \

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 How to pronounce cosmically (audio) \ 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

And there's also a cosmic courtyard outdoor activity day. Amy Schwabe, Milwaukee Journal Sentinel, "What to do when there's nothing to do: Here are ideas for bored kids in the Milwaukee area.," 10 July 2019 The probe will carry NASA instruments, including one to monitor the level of cosmic radiation to which astronauts would be exposed, said Jon Morse, Orbit Beyond’s chief science officer, at a space-resources conference in Golden, Colorado, in June. Alexandra Witze, Scientific American, "Can NASA Really Return People to the Moon by 2024?," 9 July 2019 Over the past half-century, scientists have learned that microgravity and cosmic radiation can cause many space travelers to experience a variety of health problems, from blurred vision to migraines. San Diego Union-Tribune, "UCSD to send ‘mini-brains’ to International Space Station for neural disease research," 7 July 2019 In extremely long missions to space, traditionally dried and packaged foods may not be able to maintain much vitamin content because of cosmic radiation and the passage of time. Tyler Kord, Popular Mechanics, "Cooking (and Shrinking) the Modern Combat Ration," 29 June 2019 For the 152 people whose cremated remains flew aboard Falcon Heavy Tuesday morning, a cosmic send-off was the only way to go, too. Chabeli Herrera,, "SpaceX successfully launches Falcon Heavy for the third time in its most complex mission yet," 25 June 2019 With many of us scrambling to find hairstyles that will standout at Essence Festival next month, the alien-fighting novice’s space buns and victory rolls provide a cosmic dose of inspiration. Jennifer Ford, Essence, "Tessa Thompson's Hairstyles Are Out Of This World," 20 June 2019 Teen Galaxy Jars, a cosmic craft project for students in grades 7-12, will be offered at 2 p.m. June 25. Post-tribune Staff Report, Post-Tribune, "Community news," 14 June 2019 Along with discovering a novel connection between cosmic and terrestrial events, the findings might help solve a 25-year-old mystery in high-energy physics. Adam Mann, National Geographic, "Most powerful electrical storm on record detected," 23 Apr. 2019

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

14 Jul 2019

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 How to pronounce cosmic (audio) \

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

Comments on cosmic

What made you want to look up cosmic? Please tell us where you read or heard it (including the quote, if possible).


to form ideas or theories about something

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