cosmic
Americanadjective
-
of or relating to the cosmos.
cosmic laws.
-
characteristic of the cosmos or its phenomena.
cosmic events.
-
immeasurably extended in time and space; vast.
- Synonyms:
- stupendous, enormous, immense
-
forming a part of the material universe, especially outside of the earth.
adjective
-
of or relating to the whole universe
cosmic laws
-
occurring or originating in outer space, esp as opposed to the vicinity of the earth, the solar system, or the local galaxy
cosmic rays
-
immeasurably extended in space or time; vast
-
rare harmonious
Other Word Forms
Etymology
Origin of cosmic
1640–50; < Greek kosmikós worldly, universal, equivalent to kósm ( os ) world, arrangement + -ikos -ic
Explanation
If it has to do with the universe, it's cosmic. The planets, for instance, are cosmic bodies. When you use the word cosmic to describe something big, you often use it with the word, proportions. A big mistake might be an error of cosmic proportions. In the 1960s, when humankind had been exploring space for about 10 years, the word cosmic became commonly used to describe things that might be considered "far out" or groovy. Like wow, man!
Vocabulary lists containing cosmic
Elements of the Universe: Cosm, Cosmo ("Universe")
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
The Launch of Sputnik 1
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
The Brief Wondrous Life of Oscar Wao
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The telescope had already detected steady X-ray emission from the same location roughly a day before the gamma-ray bursts appeared, a sequence rarely associated with powerful cosmic explosions.
From Science Daily • Jun. 26, 2026
The reaction is swift, defensive and many times delivered with the vitriol of an adolescent facing the cosmic injustice of screen-time limits.
From The Wall Street Journal • Jun. 21, 2026
It ties together some of the deepest puzzles in physics, from the information paradox to dark matter and dark energy, from cosmic cycles to the arrow of time.
From Science Daily • Jun. 18, 2026
Nasa and Elon Musk's Space X were among industry giants to visit a factory which provides parachute material for cosmic exploration.
From BBC • Jun. 17, 2026
The remnants of that fireball, the cosmic background radiation, emanating from all parts of the sky can be detected by radio telescopes today.
From "Cosmos" by Carl Sagan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
