diary
noun
di·a·ry
ˈdī-(ə-)rē 
plural diaries
1
: a record of events, transactions, or observations kept daily or at frequent intervals : journal
especially
: a daily record of personal activities, reflections, or feelings
2
: a book intended or used for a diary
Examples of diary in a Sentence
has diligently kept a diary since she was 15
Recent Examples on the Web
Smith’s diary is recognized by Major League Baseball’s official historian, John Thorn.
—
Bill Swank, San Diego Union-Tribune, 17 July 2025
In some of the studies, participants filled out questionnaires and sleep diaries; in others, researchers measured sleep quality by giving participants wearable activity trackers.
—Emily Kay Votruba, EverydayHealth.com, 17 July 2025
Tempest borrowed the unit’s diary—a day-by-day chronicle of its actions, often scribbled in pencil by a junior officer—and placed advertisements in Bradford newspapers, asking to speak to other surviving members of the Sixth.
—Ed Caesar, New Yorker, 13 July 2025
Each food diary follows one anonymous reader’s week of expenses related to groceries, restaurant meals, coffee runs, and every bite in between.
—Karla Walsh, Bon Appetit Magazine, 11 July 2025
See All Example Sentences for diary
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Bill Swank, San Diego Union-Tribune, 17 July 2025
In some of the studies, participants filled out questionnaires and sleep diaries; in others, researchers measured sleep quality by giving participants wearable activity trackers.
—Emily Kay Votruba, EverydayHealth.com, 17 July 2025
Tempest borrowed the unit’s diary—a day-by-day chronicle of its actions, often scribbled in pencil by a junior officer—and placed advertisements in Bradford newspapers, asking to speak to other surviving members of the Sixth.
—Ed Caesar, New Yorker, 13 July 2025
Each food diary follows one anonymous reader’s week of expenses related to groceries, restaurant meals, coffee runs, and every bite in between.
—Karla Walsh, Bon Appetit Magazine, 11 July 2025
See All Example Sentences for diary
Cite this Entry
“Diary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diary. Accessed 29 Jul. 2025.
Copy CitationKids Definition
diary
noun
di·a·ry
ˈdī-(ə-)rē
plural diaries
: a daily record especially of personal experiences and thoughts
also
: a book for keeping such a record
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