[ sahy-muh l-kast, ‐kahst, sim-uh l‐ ]
/ ˈsaɪ məlˌkæst, ‐ˌkɑst, ˈsɪm əl‐ /


a program broadcast simultaneously on radio and television, or on more than one station, or in several languages, etc.
a closed-circuit television broadcast of an event, as a horse race, while it is taking place.

verb (used with or without object), si·mul·cast, si·mul·cast·ed, si·mul·cast·ing.

to broadcast in this manner.

Origin of simulcast

An Americanism dating back to 1945–50; simul(taneous) + (broad)cast

Can be confused

broadcast narrowcast simulcast Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for simulcast

British Dictionary definitions for simulcast


/ (ˈsɪməlˌkɑːst) /


(tr) to broadcast (a programme, etc) simultaneously on radio and television


a programme, etc, so broadcast

Word Origin for simulcast

C20: from simul (taneous) + (broad) cast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012