lead-in

lead-in

[leed-in]
noun
1.
something that leads in or introduces; introduction; opening.
2.
Radio, Television.
a.
the connection between an antenna and a transmitter or receiving set.
b.
the portion of a program or script that precedes or introduces a commercial.
adjective
3.
(of a conductor) carrying input to an electric or electronic device or circuit, especially from an antenna.

Origin:
1910–15; noun, adj. use of verb phrase lead in

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
lead-in (ˈliːdˌɪn)
 
n
1.  a.  an introduction to a subject
 b.  (as modifier): a lead-in announcement
2.  the connection between a radio transmitter, receiver, etc, and the aerial or transmission line

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