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[dahy-uh-ree] /ˈdaɪ ə ri/
noun, plural diaries.
a daily record, usually private, especially of the writer's own experiences, observations, feelings, attitudes, etc.
a book for keeping such a record.
a book or pad containing pages marked and arranged in calendar order, in which to note appointments and the like.
Origin of diary
1575-85; < Latin diārium daily allowance, journal, equivalent to di(ēs) day + -ārium -ary
Can be confused
dairy, diary.
1, 2. journal, daybook, log, chronicle. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for diary
Contemporary Examples
Historical Examples
  • From this point the progress will be best narrated by extracts from my diary.

  • It was a very serious thing for the elements when they got into Aunt Jane's diary.

    Malbone Thomas Wentworth Higginson
  • On the 9th Nelson sent Collingwood what he called, in his diary, the Nelson-touch.

  • Her thoughts went back to what she had written in her diary.

  • That page in her diary called out to her to come home and burn it.

British Dictionary definitions for diary


noun (pl) -ries
a personal record of daily events, appointments, observations, etc
a book for keeping such a record
Word Origin
C16: from Latin diārium daily allocation of food or money, journal, from diēs day
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for diary

1580s, from Latin diarium "daily allowance," later "a journal," neuter of diarius "daily," from dies "day" (see diurnal); also see -ary. Earliest sense was a daily record of events; sense of the book in which such are written is said to be first attested in Ben Jonson's "Volpone" (1605).

Online Etymology Dictionary, © 2010 Douglas Harper
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