lucid

adjective
lu·cid | \ˈlü-səd \

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

Keep scrolling for more

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

It's easy enough to shed some light on the origins of lucid: it derives—via the Latin adjective lucidus, meaning "shining"—from the Latin verb lucēre, meaning "to shine." Lucid has been used by English speakers since at least the late 16th century. Originally, it meant merely "filled with light" or "shining," but it has since developed extended senses describing someone whose mind is clear or something with a clear meaning. Other shining examples of lucēre descendants include translucent, lucent ("glowing"), and the somewhat rarer relucent ("reflecting light" or "shining"). Even the word light itself derives from the same ancient word that led to lucēre.

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

Sedation takes hours to wear off and, although appearing to be lucid, patients are frequently not able to retain pertinent information. BostonGlobe.com, "Letters to the editor of the Boston Globe Magazine," 1 June 2018 Yet the latest epic from Marvel Comics is a lucid demonstration of nonquantum entanglement. Joe Morgenstern, WSJ, "‘Ant-Man and the Wasp’ Review: A Sequel With Wings," 5 July 2018 Opening with a series of quietly rippling piano chords and delicate accompaniment from the strings, the concerto, heard here in its debut recording, offers lucid evidence of the influence of Romanticism in Glass’s recent music. David Weininger, BostonGlobe.com, "From Philip Glass to folk-inspired violin, sounds for the summer," 4 July 2018 Our work on lucid dreaming is a relatively new but exciting direction that our sleep research has recently taken. Genevieve Bookwalter, chicagotribune.com, "Shout Out: Sadie Witkowski, doctoral student studying sleep and dreams," 23 May 2018 In 1988, the former Forest Park High School class president was 27, married and embarking on a finance career when he was diagnosed with a disease that would lay waste to his muscles and lungs, leaving him with a lucid mind in a useless body. Bill Torpy, ajc, "Torpy at Large: The Tin Man meets The Spirit in the Sky," 19 June 2018 Police found Sharrow surprisingly lucid after her arrest, according to one officer who drove her to the hospital. Brian Macquarrie, BostonGlobe.com, "Killed Maine grandfather’s past and present come together in tragic collision," 12 June 2018 Layton makes all of this lucid, and there are times his merger of doc and drama works well. Gary Thompson, Philly.com, "'American Animals': Rebellious cool as white privilege in this inventive take on true crime," 7 June 2018 For some of those waiting, the soup — lucid and almost delicate in flavor — is simply, profoundly a taste of home. Ligaya Mishan, New York Times, "At Ho Foods, a Noodle Soup That Nourishes and Transports," 19 Apr. 2018

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.

See More

First Known Use of lucid

1591, in the meaning defined at sense 1a

History and Etymology for lucid

Latin lucidus, from lucēre — see lucent

Keep scrolling for more

Learn More about lucid

Listen to Our Podcast about lucid

Dictionary Entries near lucid

luci-

Lucianic

lucible

lucid

lucidity

lucies

lucifee

Statistics for lucid

Last Updated

9 Oct 2018

Look-up Popularity

Time Traveler for lucid

The first known use of lucid was in 1591

See more words from the same year

Keep scrolling for more

More Definitions for lucid

lucid

adjective

English Language Learners Definition of lucid

: very clear and easy to understand

: able to think clearly

lucid

adjective
lu·cid | \ˈlü-səd \

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.

lucid

adjective
lu·cid | \ˈlü-səd \

Medical Definition of lucid 

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

Other Words from lucid

lucidity noun plural -ties

Keep scrolling for more

Comments on lucid

What made you want to look up lucid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!