narrowcast

[nar-oh-kast, -kahst]
verb (used without object), narrowcast or narrowcasted, narrowcasting. Radio and Television.
to aim a program or programming at a specific, limited audience or sales market.

Origin:
1770–80, for an earlier sense; narrow (broad)cast

broadcast, narrowcast, simulcast.
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World English Dictionary
narrowcast (ˈnærəʊˌkɑːst)
 
vb , -casts, -casting, -cast, -casted
1.  (tr) to supply (television programmes) to a small area by cable television
2.  (intr) (of programmers or advertisers) to target a specialized audience on radio or television
 
'narrowcasting
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences for narrowcasting
Broadcasting to a very narrow range of audience is called narrowcasting.
Some forms of narrowcasting involve directional signals or use of encryption.
A new type of narrowcasting is evolving in the form of interactive narrowcasting.
More and more systems are being introduced into the narrowcasting market.
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