Top Definition
A type of sleep cycle, related to diurnal and nocturnal. It refers to a creature that doesn't sleep JUST at night (like humans) or JUST during the day (like owls and bats), but instead naps at various times, both day AND night, throughout a 24 hour period.
Cats take cat naps because they are cathemeral.

College students often become cathemeral after excessive partying and late-night studying.
by KatrinaLC August 06, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.