from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A daily record, especially a personal record of events, experiences, and observations; a journal.
- n. A book for use in keeping a personal record, as of experiences.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A daily log of experiences, especially those of the writer.
- n. The method or media used to keep such experiences.
- n. A calendar or appointment book.
- adj. Lasting for one day.
from the GNU version of the Collaborative International Dictionary of English
- n. A register of daily events or transactions; a daily record; a journal; a blank book dated for the record of daily memoranda
- adj. lasting for one day.
from The Century Dictionary and Cyclopedia
- Lasting for one day: as, a diary fever.
- n. [= Sp. Pg. It. diario, ⟨ L. diarium, a daily allowance for soldiers, LL. also a diary, neut. of *diarius, adj., ⟨ dies, day: see dial, deity. The synonym journal is of the same ult. origin.]
- n. An account of daily events or transactions; a journal; specifically, a daily record kept by a person of any or all matters within his experience or observation: as, a diary of the weather; a traveler's diary.
- n. A book prepared for keeping a diary; especially, a book with blank leaves bearing printed dates for a daily record, often including other printed matter of current use or interest: as, a lawyers' diary.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a personal journal (as a physical object)
- n. a daily written record of (usually personal) experiences and observations
Latin diārium, daily allowance, daily journal, from diēs, day; see dyeu- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin diārium ("a daily allowance for soldiers, Late Latin also a diary"), neuter of * diarius, from dies ("a day"). (Wiktionary)