cosmic

adjective

cos·​mic ˈkäz-mik How to pronounce cosmic (audio)
variants or less commonly cosmical
ˈkäz-mi-kəl How to pronounce cosmic (audio)
Synonyms of cosmic
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
ˈkäz-mi-k(ə-)lē How to pronounce cosmic (audio)
adverb

Synonyms of cosmic

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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
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Cornelis van Zuilen has created a stunning cosmic mosaic of all 110 galaxies, star clusters and nebulas of the Messier catalog — a leviathan effort that took hundreds of hours and many nights of sleeping in his car to complete. — Anthony Wood, Space.com, 11 Oct. 2026 Since then, researchers have won Nobel Prizes for discoveries using neutrinos created with particle accelerators, in cosmic-ray air showers in the Earth’s atmosphere and in the core of the Sun. — Doug Cowen, The Conversation, 8 Oct. 2026 Chidgasornpongse crystallizes that cosmic doom further when Grandma Saluay falls half-asleep or stares out the van window, her mind drifting into the ether. — Lé Baltar, IndieWire, 8 Oct. 2026 That esteemed cosmic vintage makes this the oldest FRB ever detected by far. — Adam Kovac, Scientific American, 8 Oct. 2026 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

Phrases Containing cosmic

Rhymes for cosmic

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Browse Nearby Words

cosmetology
cosmic
cosmicality
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Cite this Entry

“Cosmic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic. Accessed 14 Oct. 2026.

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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
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