- The definition of crepuscular is dim, or active during the twilight hours.
An example of something crepuscular is a room with little light.
crepuscular definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- of or like twilight; dim
- active at twilight or just before sunrise: crepuscular insects
Origin: see crepuscule
crepuscular definition by American Heritage Dictionary
- Of or like twilight; dim: “the period's crepuscular charm and a waning of the intense francophilia that used to shape the art market” (Wall Street Journal).
- Zoology Becoming active at twilight or before sunrise, as do bats and certain insects and birds.