• WordNet 3.6
    • adj crepuscular like twilight; dim "the evening's crepuscular charm"
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Webster's Revised Unabridged Dictionary
    • Crepuscular (Zoöl) Flying in the twilight or evening, or before sunrise; -- said certain birds and insects. "Others feed only in the twilight, as bats and owls, and are called crepuscular ."
    • Crepuscular Pertaining to twilight; glimmering; hence, imperfectly clear or luminous. "This semihistorical and crepuscular period."
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Century Dictionary and Cyclopedia
    • crepuscular Pertaining to or resembling twilight; glimmering.
    • crepuscular In zoology, flying or appearing in the twilight or evening, or before sunrise: as, the crepuscular or nocturnal Lepidoptera.
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Chambers's Twentieth Century Dictionary
    • adj Crepuscular kre-pus′kū-lar of or pertaining to twilight—also Crepus′culous
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Webster's Revised Unabridged Dictionary
Cf. F. crépusculaire,
Chambers's Twentieth Century Dictionary
L. crepusculumcreper, dusky, obscure.


In literature:

Through the crepuscular whiteness the trees hung in blotted masses.
"The Reef" by Edith Wharton
Fainter, more crepuscular became the light, yet never losing its crystalline quality.
"The Metal Monster" by A. Merritt
The cabin room was ill lighted; but the crepuscular dimness did not seem to hinder his sight.
"Alice of Old Vincennes" by Maurice Thompson
Associated Words: crepuscular, crepusculous.
"Putnam's Word Book" by Louis A. Flemming
There is indeed something infinitely charming in the crepuscular moments of the human mind.
"Sketches and Studies in Italy and Greece, Second Series" by John Addington Symonds
Possibly because they are crepuscular, harriers may be thought more rare than they are.
"The Way of the Wild" by F. St. Mars
He darted glances in every direction, but the fall of distant waters smote upon his ears like the crepuscular music of Chopin.
"Visionaries" by James Huneker
After days of this crepuscular existence he emerged to find the cathedral less disfigured than he had feared.
"Leaves from a Field Note-Book" by J. H. Morgan
Crepuscular: active or flying at dusk.
"Explanation of Terms Used in Entomology" by John. B. Smith
Standing in the crepuscular light of the corner, her marvellous beauty shone out with the vivid richness of some rare painting.
"Lucy Maud Montgomery Short Stories, 1896 to 1901" by Lucy Maud Montgomery

In news:

A beautiful image taken above Paris of mammatus clouds and crepuscular rays.
Sunbeams, or crepuscular rays, shine through the trees of Oakton, Virginia on the morning of June 17, 2011.
Pandas are crepuscular, which means they are most active at dawn and dusk.