cosmic

adjective

cos·​mic ˈkäz-mik How to pronounce cosmic (audio)
variants or less commonly cosmical
1
a
: 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
cosmically 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
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.
The project blends true crime with cosmic horror elements. Naman Ramachandran, Variety, 30 June 2025 As for cosmic weather this week, note that power struggles around ideas may arise on June 29, while July 4 could bring big ups, downs or spontaneity to relationships. Kyle Thomas, People.com, 29 June 2025 Since then, the Mars satellites have acted as a super-speed web of cosmic messengers, passing data, imagery, software changes and commands between the Martian robotic scouts and their commanders across NASA. Kevin Holden Platt, Forbes.com, 28 June 2025 Tomorrowland kitschy vibe of the film, this newest trailer emphasizes the family angle is chock-full of lots of good old-fashioned superhero action, as the quartet takes on a world-devouring cosmic being. ArsTechnica, 25 June 2025 See All Example Sentences for cosmic

Word History

Etymology

Greek kosmikos, from kosmos order, universe

First Known Use

1685, in the meaning defined at sense 1a

Time Traveler
The first known use of cosmic was in 1685

Browse Nearby Words

Cite this Entry

“Cosmic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic. Accessed 4 Jul. 2025.

Kids Definition

cosmic

adjective
cos·​mic ˈkäz-mik How to pronounce cosmic (audio)
1
: of or relating to the cosmos
cosmic theories
2
: extremely vast : grand
cosmic dimensions

More from Merriam-Webster on cosmic

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!