Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for diurnal from the 1913 edition of Webster's Revised Unabridged Dictionary. Define diurnal using one of the most comprehensive free online dictionaries on the web.

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diurnal
Part of Speech: Noun
Results: 7
1. Daily; recurring every day; performed in a day; going through its changes in a day; constituting the measure of a day; as, a diurnal fever; a diurnal task; diurnal aberration, or diurnal parallax; the diurnal revolution of the earth.
2. A daybook; a journal.
3. A diurnal bird or insect.
6. Active by day; - applied especially to the eagles and hawks among raptorial birds, and to butterflies ( Diurna) among insects.
7. A small volume containing the daily service for the little hours, viz., prime, tierce, sext, nones, vespers, and compline.
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