from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Relating to or occurring in a 24-hour period; daily.
- adj. Occurring or active during the daytime rather than at night: diurnal animals.
- adj. Botany Opening during daylight hours and closing at night.
- n. A book containing all the offices for the daily canonical hours of prayer except matins.
- n. Archaic A diary or journal.
- n. Archaic A daily newspaper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Happening or occurring during daylight, or primarily active during that time.
- adj. Said of a flower open, or releasing its perfume during daylight hours, but not at night.
- adj. Having a daily cycle that is completed every 24 hours, usually referring to tasks, processes, tides, or sunrise to sunset.
- adj. Done once every day; daily, quotidian.
- adj. Published daily.
- n. A flower that opens only in the day.
- n. A book containing canonical offices performed during the day, hence not matins.
- n. A diary or journal.
- n. A daily news publication.
from the GNU version of the Collaborative International Dictionary of English
- adj. Relating to the daytime; belonging to the period of daylight, distinguished from the night; -- opposed to
- adj. Daily; recurring every day; performed in a day; going through its changes in a day; constituting the measure of a day
- adj. Opening during the day, and closing at night; -- said of flowers or leaves.
- adj. Active by day; -- applied especially to the eagles and hawks among raptorial birds, and to butterflies (Diurna) among insects.
- n. A daybook; a journal.
- n. A small volume containing the daily service for the “little hours,” viz., prime, tierce, sext, nones, vespers, and compline.
- n. A diurnal bird or insect.
from The Century Dictionary and Cyclopedia
- Of or belonging to day; pertaining to the daytime; belonging to the period of daylight, as distinguished from the night: opposed to nocturnal: as, diurnal heat; diurnal hours; diurnal habits, as of an animal.
- Daily; happening every day: as, a diurnal task.
- Performed in or occupying one day; lasting but for one day; ephemeral.
- Constituting the measure of a day, either on the earth or one of the other planets: as, the diurnal revolution of the earth, or of Mars or Jupiter.
- Characterized by some change or peculiarity which appears and disappears with the daytime,
- n. A day-book; a diary; a journal.
- n. A daily newspaper.
- n. A Roman Catholic service-book containing the offices for the daily hours of prayer.
- n. In ornithology, a diurnal bird of prey.
- n. In entomology, one of the Diurna.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. of or belonging to or active during the day
- adj. having a daily cycle or occurring every day
Middle English, from Late Latin diurnālis, from Latin diurnus, from diēs, day.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin diurnālis, from diēs ("day"). Cognate with journal. (Wiktionary)