From The Collaborative International Dictionary of English v.0.48 [gcide]:
Notification \No`ti*fi*ca"tion\, n. [Cf. F. notification. See
Notify.]
1. The act of notifying, or giving notice; the act of making
known; especially, the act of giving official notice or
information to the public or to individuals, corporations,
companies, or societies, by words, by writing, or by other
means.
[1913 Webster]
2. Notice given in words or writing, or by signs.
[1913 Webster]
3. The writing which communicates information; an
advertisement, or citation, etc.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
notification
n 1: an accusation of crime made by a grand jury on its own
initiative [syn: presentment, notification]
2: informing by words [syn: telling, apprisal,
notification]
3: a request for payment; "the notification stated the grace
period and the penalties for defaulting" [syn:
notification, notice]