broad·cast / ˈbrôdˌkast/ • v. (past -cast or -cast·ed; past part. -cast or -cast·ed) [tr.] 1. (often be broadcast) transmit (a program or some information) by radio or television: the announcement was broadcast live [as n.] (broadcasting) the 1920s saw the dawn of broadcasting. ∎ [intr.] take part in a radio or television transmission: the station broadcasts 24 hours a day. ∎ tell (something) to many people; make widely known: we don't want to broadcast our unhappiness to the world.2. scatter (seeds) by hand or machine rather than placing in drills or rows.• n. a radio or television program or transmission.• adj. of or relating to such programs: a broadcast journalist.DERIVATIVES: broad·cast·er n.