"announcement of an event," 1069, from O.E.
tidung "event, occurrence, piece of news," perhaps in part a verbal noun from O.E.
tidan "to happen," in part from O.N.
tiðendi (pl.) "events, news," from
tiðr (adj.) "occurring," from PIE
*di-ti- (see
tide). Cf. Norw.
tidende "tidings, news," Du.
tijding, Ger.
Zeitung "newspaper").