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Meaning of lead-in

lead-in

Pronunciation: (lēd'in"), [key]
— n.
  1. something that leads in or introduces; introduction; opening.
    1. the connection between an antenna and a transmitter or receiving set.
    2. the portion of a program or script that precedes or introduces a commercial.
—adj.
  1. (of a conductor) carrying input to an electric or electronic device or circuit, esp. from an antenna.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.