- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a personal record of daily events, appointments, observations, etc
- a book for keeping such a record
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
Word Origin and History for diary's
Online Etymology Dictionary, © 2010 Douglas Harper