/ Dictionary / Index L lead-in: Meaning and Definition of Find definitions for: lead-in Pronunciation: (lēd'in"), [key] — n. something that leads in or introduces; introduction; opening. the connection between an antenna and a transmitter or receiving set. the portion of a program or script that precedes or introduces a commercial. —adj. (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. See also: lead-in (Thesaurus) lead glaze leading Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language