narrowcast

narrow +‎ -cast, by analogy with broadcast.

narrowcast (third-person singular simple present narrowcasts, present participle narrowcasting, simple past and past participle narrowcast or narrowcasted)

1. To transmit a programme to selected individuals or groups, especially via cable.
2. To send out a message or disseminate information to a specific narrow audience rather than the general public.
   • 2023 June 6, Thomas L. Friedman, “From Tel Aviv to Riyadh”, in The New York Times‎, →ISSN:

     As much as Israeli media outlets and politicians are narrowcasting their ideologies every day, Israel’s emerging blended society is on full display every night on prime-time TV — an ultra-Orthodox female celebrity chef on one channel, an Israeli Druze female celebrity chef on another, an Israeli Arab star journalist on another.

3. (medicine) To transmit a medical intervention to a specific organ or type of tissue.
   • 2018, Steven Pinker, Enlightenment Now: The Case for Reason, Science, Humanism, and Progress, →ISBN:

     Cancer therapies can be narrowcasted to the unique genetic signature of a tumor instead of poisoning every dividing cell in the body.

narrowcast (plural narrowcasts)

1. A programme transmitted in this manner.