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
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But, for those who can’t afford a $28 million ticket to space, Mongolia’s MARS-V camp will offer a more accessible way to experience that cosmic allure at a fraction of the cost, expected to be around $6,000 per person for a month at the camp, and pre-camp training and evaluation. Rosanna Philpott, CNN Money, 24 Oct. 2025 This behavior will lead to a spectrum of temperature imperfections in the Big Bang’s leftover glow, and eventually will form the seeds of structure that grow into stars, galaxies, and the cosmic web. Big Think, 23 Oct. 2025 In the far distant future of our planet, will memories persist about cosmic disasters that wiped out entire populations? Literary Hub, 22 Oct. 2025 Kurma is a tortoise and represents endurance, patience and cosmic time. Sofia Celeste, Footwear News, 22 Oct. 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

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Cite this Entry

“Cosmic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic. Accessed 28 Oct. 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

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