Top Definition
The time at which one actually wakes up, whether or not it fits the chronological definition of "morning." See also biotoday, biotonight, etc. May be used to emphasize or account for the fact that one's sleep cycle is substantially different from the norm.
When I got up this biomorning, the cat was hungry because it was already 2pm.
#sleep #morning #sunrise #night owl #morning person
by G M October 16, 2007
5 Words related to biomorning
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