diurnal 1 of 2

adjective

dī-ˈər-nᵊl How to pronounce diurnal (audio)
Definition of diurnalnext
as in daily
occurring, done, produced, or appearing every day a love as constant and certain as the diurnal tides

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

diurnal

2 of 2

noun

as in periodical
a publication that appears at regular intervals a collection of diurnals containing essays by preeminent 19th-century American writers and thinkers

Synonyms & Similar Words

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of diurnal
Adjective
During its 12-day journey, SE2 completed one full day-night diurnal cycle over New Mexico and three consecutive diurnals off the Brazilian coast. — Chris Young, Interesting Engineering, 14 Apr. 2026 Overnight lows will drop into the low 40s under clear skies, marking a 30-degree diurnal swing in some spots. — Senior Newsroom Meteorologist, San Francisco Chronicle, 3 Feb. 2026 This doubling of the diurnal might happen once a year. — Lauren Bostwick, CBS News, 18 Jan. 2026 The watery and stable microclimate within the caves long ago could have hosted microbial colonies, and today the caves are protected from the extreme conditions on Mars' surface, such as wildly different diurnal temperatures, dust storms and solar ultraviolet and cosmic-ray radiation. — Keith Cooper, Space.com, 24 Nov. 2025 See All Example Sentences for diurnal
Recent Examples of Synonyms for diurnal
  1. daily
  2. periodical
  3. newspaper
  4. journal
  5. book
  6. magazine
Adjective
  • The verdicts have sparked daily protests in the small Balkan country.
    — Arkansas Online, Arkansas Online, 2 Oct. 2026
  • Temperatures could climb higher Wednesday into Friday, potentially breaking daily records.
    — Alex Wigglesworth, Los Angeles Times, 2 Oct. 2026
Definition of daily
Noun
  • Operating for nearly a century, Algani began in 1927 as a modest seller of newspapers, periodicals, and postcards before evolving into one of the city’s first international newsstands.
    — Eleonora Giordani, Vogue, 17 Sep. 2026
  • People who might be lucky to have a roof over their heads gathered there to read American books and periodicals, watch American movies, listen to lectures about America, tap their toes to jazz from America.
    — Ian Buruma, New Yorker, 10 Aug. 2026
Definition of periodical
Noun
  • The poll found his approval had declined by 5 points since the newspaper’s previous surveys in four of the states in June.
    — Rena Rowe, The Washington Examiner, 3 Oct. 2026
  • The British newspaper are co-producers of the movie, which is directed by Yuval Abraham and Rachel Szor.
    — K.J. Yossman, Variety, 2 Oct. 2026
Definition of newspaper
Noun
  • The current credit ecosystem arose in the mid-19th century, as science emerged as a profession alongside the rise of the modern scientific journal.
    — Jeffrey S. Flier, STAT, 5 Oct. 2026
  • The club recently published an official Field Guide, a journal (available at events) that includes a list of sites and recording prompts, as well as space to log metadata and the stories behind the sounds.
    — Los Angeles Times, Los Angeles Times, 5 Oct. 2026
Definition of journal
Noun
  • There's a fittingly witchy gift shop filled with all sorts of tchotchkes and collectibles, including spell books, tarot cards, cups for reading tea leaves, and a selection of history books.
    — Condé Nast, Condé Nast Traveler, 4 Oct. 2026
  • Brower and her partner, Aspen Simone, dug into books about pigeon behavior and their history with humans.
    — KYLE MELNICK THE WASHINGTON POST, Arkansas Online, 4 Oct. 2026
Definition of book
Noun
  • Rich tried to vocalize his concerns, writing about the dangers in columns for outlets like Time magazine.
    — Rebecca Rubin, Variety, 6 Oct. 2026
  • Also on the lobby level, a corner shop sells downloadable newspapers and magazines, snacks, and classic Penguin paperbacks.
    — Condé Nast, Condé Nast Traveler, 6 Oct. 2026
Definition of magazine

Browse Nearby Words

ditzy
diurnal
diurnals
See all Nearby Words

Podcast

Theme music by Joshua Stamper ©2006 New Jerusalem Music/ASCAP

Cite this Entry

“Diurnal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/diurnal. Accessed 8 Oct. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of etiquette

See Definitions and Examples »

Popular in Grammar & Usage

See More

Do You Need a New Language Peeve?

The Exceptions of '-s' and '-es' Plurals

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

Do You Need a New Language Peeve?

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
name tags
Words Named After People Quiz Find out who’s behind "leotard," "morphine," an...
See All