(n): the state of needing something that is absent or unavailable
(n): failure to be present
(n): the failure to attend
(n): the time interval during which something or somebody is away
(n): a definite length of time marked off by two instants
(n): the occurrence of an abrupt, transient loss or impairment of consciousness (which is not subsequently remembered), sometimes with light twitching, fluttering eyelids, etc.; common in petit mal epilepsy
(n): a sudden occurrence (or recurrence) of a disease
Absence makes the heart grow fonder. Get Absence!
(Courtesy poet Steve Turner)