of, pertaining to, or resembling twilight; dim; indistinct.
Zoology. appearing or active in the twilight, as certain bats and insects.

1660–70; crepuscule + -ar1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To crepuscular
World English Dictionary
crepuscular (krɪˈpʌskjʊlə)
1.  of or like twilight; dim
2.  (of certain insects, birds, and other animals) active at twilight or just before dawn
[C17: from Latin crepusculum dusk, from creper dark]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source's 21st Century Lexicon
Main Entry:  crepuscular1
Part of Speech:  adj
Definition:  pertaining to twilight, esp. in dimness
Etymology:  Latin crepusculum
Main Entry:  crepuscular2
Part of Speech:  adj
Definition:  appearing or active at twilight
Etymology:  Latin crepusculum
Usage:  zoology's 21st Century Lexicon
Copyright © 2003-2014, LLC
Cite This Source
Word Origin & History

fig. use from 1660s; lit. use from 1755, from L. crepusculum "twilight." Especially of morning twilight.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
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.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature