lu·​cid | \ ˈlü-səd How to pronounce lucid (audio) \

Definition of lucid

1a : suffused with light : luminous
b : translucent snorkeling in the lucid sea
2 : having full use of one's faculties : sane
3 : clear to the understanding : intelligible

Other Words from lucid

lucidly adverb
lucidness noun

Choose the Right Synonym for lucid

clear, perspicuous, lucid mean quickly and easily understood. clear implies freedom from obscurity, ambiguity, or undue complexity. clear instructions perspicuous applies to a style that is simple and elegant as well as clear. a perspicuous style lucid suggests a clear logical coherence and evident order of arrangement. a lucid explanation

Shine a Light on the Origin of Lucid

Lucid comes from the Latin verb lucere, meaning "to shine," which is reflected in its meanings "filled with light" or "shining." It also describes someone whose mind is clear or something with a clear meaning.

Examples of lucid in a Sentence

The stroke also set off a major crisis of presidential succession, as the debilitated and not entirely lucid president continued to cling to office and plan feebly for re-election. — Beverly Gage, New York Times Book Review, 13 Dec 2009 His lucid history of this grim subject is scrupulously accurate, so far as I am able to judge … — Richard A. Posner, New Republic, 8 Apr 2002 "You would like me to read to you?" "You would oblige me greatly by doing so, Dorothea," said Mr. Casaubon, with a shade more meekness than usual in his polite manner. "I am wakeful: my mind is remarkably lucid." — George Eliot, Middlemarch, 1872 The atmosphere, seen through a short space of half or three-quarters of a mile, was perfectly lucid, but at a greater distance all colours were blended into a most beautiful haze … — Charles Darwin, The Voyage of the Beagle, 1839 He is able to recognize his wife in his lucid moments. those lucid bands that spread across the arctic sky and are known as the northern lights See More
Recent Examples on the Web The book is a lucid look at rural America, and reads as a thrilling political story, told with warmth and smarts., 12 May 2022 The author of nine novels, Bhagat is known for lucid and fast-moving stories that translate well into film. Patrick Frater, Variety, 2 May 2022 Her lucid writing depicts the troubled nature of human relationships and an unapologetic life with commanding grace. Farah Abdessamad, The Atlantic, 12 Apr. 2022 The title comes from Watt's last lucid text to his daughter. Patricia Gallagher Newberry, The Enquirer, 12 Apr. 2022 There was some mild cognitive impairment, but my mother was quite lucid and understood his questions. Annie Lane, oregonlive, 8 Apr. 2022 There are also practical books, like Boris Berman’s lucid Notes from the Pianist’s Bench and Piano Notes by the polymathic Charles Rosen, who vividly describes the physical and mental challenges of being a pianist. Simon Callow, The New York Review of Books, 6 Apr. 2022 Ironically, this book is a triumph of genius: a lucid explanation of the quantitative trading strategies that doomed the hedge fund Long-Term Capital Management. The Week Staff, The Week, 7 Mar. 2022 Some have claimed that electrical stimulation of brain waves can induce lucid dreams. Michael W. Clune, Harper’s Magazine , 16 Mar. 2022 See More

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

First Known Use of lucid

1591, in the meaning defined at sense 1a

History and Etymology for lucid

Latin lucidus, from lucēre — see lucent

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Last Updated

20 May 2022

Cite this Entry

“Lucid.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for lucid


lu·​cid | \ ˈlü-səd How to pronounce lucid (audio) \

Kids Definition of lucid

1 : having or showing the ability to think clearly lucid behavior
2 : easily understood lucid writing

Other Words from lucid

lucidly adverb The problem was lucidly explained.


lu·​cid | \ ˈlü-səd How to pronounce lucid (audio) \

Medical Definition of lucid

: having, showing, or characterized by an ability to think clearly and rationally

Other Words from lucid

lucidity noun, plural lucidities

More from Merriam-Webster on lucid

Nglish: Translation of lucid for Spanish Speakers

Britannica English: Translation of lucid for Arabic Speakers


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