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[kri-puhs-kyuh-ler] /krɪˈpʌs kyə lər/
of, relating to, or resembling twilight; dim; indistinct.
Zoology. appearing or active in the twilight, as certain bats and insects.
Origin of crepuscular
1660-70; crepuscule + -ar1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for crepuscular
  • The crepuscular lighting sometimes makes it difficult to read the menu.
  • It has not anything to do with this walk, this is called a crepuscular walk.
  • Shea maneuvered around the crepuscular world of back rooms, board rooms and banquet halls.
  • Look for great horned owls and other crepuscular animals during a walk.
  • crepuscular creatures began to stir with the dying of the light.
  • But the crepuscular theory of history is no less serviceable for being something of a cliché.
  • It is a play of blatant melodrama and crepuscular atmosphere.
  • Some animals are crepuscular mostly because their prey is crepuscular.
  • Other animals are crepuscular, active at dawn and dusk.
  • Learn more about these crepuscular mammals in the wildlife category of our website.
British Dictionary definitions for crepuscular


of or like twilight; dim
(of certain insects, birds, and other animals) active at twilight or just before dawn
Word Origin
C17: from Latin crepusculum dusk, from creper dark
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for crepuscular

appearing or active at twilight

Word Origin

Latin crepusculum

Usage Note

zoology's 21st Century Lexicon
Copyright © 2003-2014, LLC
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Word Origin and History for crepuscular

figurative use from 1660s; literal use from 1755, from Latin crepusculum "twilight, dusk," from creper "dusky," of unknown origin. Especially of evening twilight.

Online Etymology Dictionary, © 2010 Douglas Harper
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