cosmic string

noun

Definition of cosmic string

: any of a class of hypothetical supermassive astronomical objects that are extremely thin but are millions of light years long and that are postulated to have formed very early in the history of the universe

Recent Examples of cosmic string from the Web

Wormholes, black holes, cosmic strings, and circulating light beams have all been suggested as potential solutions for time-traveling to the past.

— matt blitz, Popular Mechanics, "We Already Know How To Build a Time Machine," 28 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosmic string.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cosmic string

1983

in the meaning defined above

See Words from the same year

NEW! Time Traveler

Learn More about cosmic string

See words that rhyme with cosmic string Britannica.com: Encyclopedia article about cosmic string

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