"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").