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Relating to the daytime; belonging to the period of
daylight, distinguished from the night; -- opposed to nocturnal; as,
diurnal heat; diurnal hours. |
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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. |
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Opening during the day, and closing at night; -- said of
flowers or leaves. |
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Active by day; -- applied especially to the eagles and
hawks among raptorial birds, and to butterflies (Diurna) among insects. |
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A daybook; a journal. |
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A small volume containing the daily service for the
"little hours," viz., prime, tierce, sext, nones, vespers, and
compline. |
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A diurnal bird or insect. |