narrowcast

Short definition from Wiktionary

Verb

1. 1
   To transmit a programme to selected individuals or groups, especially via cable.
2. 2
   To send out a message or disseminate information to a specific narrow audience rather than the general public.
3. 3
   To transmit a medical intervention to a specific organ or type of tissue.

Noun

1. 1
   A programme transmitted in this manner.