debutbroadcast

noun
UK /ˈdeɪbjuːˌbrɔːdkɑːst/
US /ˈdeɪbjuːˌbrɔːdkæst/

The first time a show is sent out on TV or radio.

The cartoon's debutbroadcast was watched by millions of kids.


OTHER MEANINGS

2. The very first time something is shown to the public.

The debutbroadcast of the new game show was a big event.

3. A show's first appearance on a streaming service.

Fans waited all year for the debutbroadcast of season one.

4. The first sending of a radio signal from a new station.

The station's debutbroadcast reached listeners across the city.